C. pensylvanica has finely-textured green leaves, to 8 inches tall. Can be mowed to 2 inches. May flowers are insignificant.The Sedge family (Cyperaceae) is as widespread as the grass family, but are especially common in wet or moist habitats in temperate and subarctic zones. The stems of sedges are solidly filled with pith, and do not have nodes. They are triangular in cross section. The leaves are arranged in three rows, with sheaths usually fused around the stem. Leaf blades of sedges are usually grass-like; with evergreen or semi-evergreen foliage. Sedges are wind-pollinated, with flower-heads almost always in spikelets.
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Size: Height: 0 ft. to 0 ft.
Width: 0 ft. to 0 ft.
Plant Category: ground covers, landscape, ornamental grasses and bamboos, perennials,
Plant Characteristics: dwarf, low maintenance, spreading,
Foliage Characteristics: evergreen, semi-evergreen,
Flower Characteristics: erect, long lasting, nodding,
Flower Color: creams, greens, whites,
Tolerances: deer, slope, wind,
Bloomtime Range: not applicable
USDA Hardiness Zone: 4 to 4
AHS Heat Zone: Not defined for this plant
Light Range: Dappled to Full Sun
pH Range: 5.5 to 6.5
Soil Range: Some Sand to Some Clay
Water Range: Normal to Moist
FertilizingTools : Aerators
Most lawns benefit from being aerated once a year, especially if you know your soil is compacted. Aeration is a mechanical means of loosening compacted soil by punching or pulling plugs of soil from the ground. Aeration increases air, water and nutrients to plant roots. If you were able to view a cross section of turf several weeks after aeration, you would see the holes filled with little white roots. Two types of aerators are:
- Spike Aerator: star-shaped or nail-like spikes which punch holes in the ground.
- Hollow-tined or Plug Aerator: penetrates turf deeply, removing plugs of soil or sod. The plugs should be allowed to dry on top of the turf. Break up the plugs by dragging a mat or piece of lathe across the turf. The soil from the plugs topdresses the turf, returning micronutirents back to the turf. These micronutrients will help to breakdown any thatch layers in the turf. Aerators are typically used in the spring or late summer/fall.
LightConditions : Dappled Light
Dappled Light refers to a dappled pattern of light created on the ground, as cast by light passing through high tree branches. This is the middle ground, not considered shady, but not sunny either. Dappled remains constant throughout the day.
Conditions : Part Sun
Part Sun refers to filtered light, with most sun being received during the afternoon hours. Shade usually occurs during the morning hours.
Conditions : Light Conditions
Unless a site is completely exposed, light conditions will change during the day and even during the year. The northern and eastern sides of a house receive the least amount of light, with the northern exposure being the shadiest. The western and southern sides of a house receive the most light and are considered the hottest exposures due to intense afternoon sun.
You will notice that sun and shade patterns change during the day. The western side of a house may even be shady due to shadows cast by large trees or a structure from an adjacent property. If you have just bought a new home or just beginning to garden in your older home, take time to map sun and shade throughout the day. You will get a more accurate feel for your site's true light conditions.
Conditions : Filtered Light
For many plants that prefer partially shady conditions, filtered light is ideal. Good planting sites are under a mid to large sized tree that lets some light through their branches or beneath taller plants that will provide some protection.
Conditions : Partial Sun, Partial Shade
Part sun or part shade plants prefer light that is filtered. Sunlight, though not direct, is important to them. Often morning sun, because it is not as strong as afternoon sun, can be considered part sun or part shade. If you live in an area that does not get much intense sun, such as the Pacific Northwest, a full sun exposure may be fine. In other areas such as Florida, plant in a location where afternoon shade will be received.
Conditions : Full to Partial Sun
Full sunlight is needed for many plants to assume their full potential. Many of these plants will do fine with a little less sunlight, although they may not flower as heavily or their foliage as vibrant. Areas on the southern and western sides of buildings usually are the sunniest. The only exception is when houses or buildings are so close together, shadows are cast from neighboring properties. Full sun usually means 6 or more hours of direct unobstructed sunlight on a sunny day. Partial sun receives less than 6 hours of sun, but more than 3 hours. Plants able to take full sun in some climates may only be able to tolerate part sun in other climates. Know the culture of the plant before you buy and plant it!
Conditions : Light and Plant Selection
For best plant performance, it is desirable to match the correct plant with the available light conditions. Right plant, right place! Plants which do not receive sufficient light may become pale in color, have fewer leaves and a "leggy" stretched-out appearance. Also expect plants to grow slower and have fewer blooms when light is less than desirable. It is possible to provide supplemental lighting for indoor plants with lamps. Plants can also receive too much light. If a shade loving plant is exposed to direct sun, it may wilt and/or cause leaves to be sunburned or otherwise damaged.
Conditions : Full Sun
Full Sun is defined as exposure to more than 6 hours of continuous, direct sun per day.
WateringTools : Watering Aides
No gardener depends 100% on natural rainfall. Even the most water conscious garden appreciates the proper hose, watering can or wand.
- Watering Cans: Whether you choose plastic of galvanized makes no difference, but do look for generous capacity and a design that is balanced when filled with water. A 2 gallon can (which holds 18 lbs. of water) is preferred by most gardeners and is best suited for outdoor use. Indoor cans should be relatively smaller with narrower spouts and roses (the filter head).
- Watering Hose: When purchasing a hose, look for one that is double-walled, as it will resist kinking. Quick coupler links are nice to have on ends of hoses to make altering length fast. To extend the life of your hose, keep it wound around a reel and stored in a shady area. Prior to winter freezes, drain hose.
- Sprayers: Are commonly thought of as devices for applying chemicals, but can really be a step saver for watering houseplants or small pots of annuals rather that dragging out a hose or making numerous trips with a watering can. The backpack sprayer is best suited for this. Take care not to use any kind of chemical in tanks used for watering!
- Sprinklers: Attached to the ends of garden hoses, these act as an economical irrigation system. Standing Spike Sprinklers are usually intended for lawns and deliver water in a circular pattern. Rotating Sprinklers deliver a circle of water and are perfect for lawns, shrubs and flower beds. Pulse-jet sprinklers cover large areas of ground in a pulsating, circular pattern. The head usually sits up on a tall stem, except for when watering lawns. Oscillating sprinklers are best for watering at ground level in a rectangular pattern.
Conditions : Moist
Moist is defined as soil that receives regular watering to a depth of 18 inch deep, does not dry out, but does not have a drainage problem either.
How-to : Watering Lawns
Lawns require more water per square foot than any other garden plant. People use a high percentage of their household water budget on lawns, and generally apply more water than they actually need. In this day of water shortages, steps people might consider include: minimizing the lawn size that fits your needs, planting grass types that are best suited for your environment and automating a sprinkler system to apply just enough water and no more.
Select your seed to minimize supplemental watering. Certain bermudas, bluegrass, ryegrass, fine textured fescues and bentgrass varieties can require higher amounts of water, while tall fescues, common bermuda and buffalo grass are more drought tolerant.
In general a lawn needs to be watered if the annual rainfall is below 40 inches per year. Additionally in droughty summer periods, if it hasn't rained at least one inch within the past 7 to 10 days, you need to water your lawn. Some people make the mistake of applying frequent, light sprinklings. This does not benefit the lawn; rather it wastes water and encourages annual weeds. Apply enough water to work its way down into the root zone (the top 12 inches of soil). Then wait to re-water only when rainfall is insufficient. The bottom line is to water slowly, infrequently and deeply.
Conditions : Regular Moisture for Outdoor Plants
Water when normal rainfall does not provide the preferred 1 inch of moisture most plants prefer. Average water is needed during the growing season, but take care not to overwater. The first two years after a plant is installed, regular watering is important. The first year is critical. It is better to water once a week and water deeply, than to water frequently for a few minutes.
Conditions : Moist and Well Drained
Moist and well drained means exactly what it sounds like. Soil is moist without being soggy because the texture of the soil allows excess moisture to drain away. Most plants like about 1 inch of water per week. Amending your soil with compost will help improve texture and water holding or draining capacity. A 3 inch layer of mulch will help to maintain soil moisture and studies have shown that mulched plants grow faster than non-mulched plants.
Conditions : Outdoor Watering
Plants are almost completely made up of water so it is important to supply them with adequate water to maintain good plant health. Not enough water and roots will wither and the plant will wilt and die. Too much water applied too frequently deprives roots of oxygen leading to plant diseases such as root and stem rots. The type of plant, plant age, light level, soil type and container size all will impact when a plant needs to be watered. Follow these tips to ensure successful watering:
* The key to watering is water deeply and less frequently. When watering, water well, i.e. provide enough water to thoroughly saturate the root ball. With in-ground plants, this means thoroughly soaking the soil until water has penetrated to a depth of 6 to 7 inches (1' being better). With container grown plants, apply enough water to allow water to flow through the drainage holes.
* Try to water plants early in the day or later in the afternoon to conserve water and cut down on plant stress. Do water early enough so that water has had a chance to dry from plant leaves prior to night fall. This is paramount if you have had fungus problems.
* Don't wait to water until plants wilt. Although some plants will recover from this, all plants will die if they wilt too much (when they reach the permanent wilting point).
* Consider water conservation methods such as drip irrigation, mulching, and xeriscaping. Drip systems which slowly drip moisture directly on the root system can be purchased at your local home and garden center. Mulches can significantly cool the root zone and conserve moisture.
* Consider adding water-saving gels to the root zone which will hold a reserve of water for the plant. These can make a world of difference especially under stressful conditions. Be certain to follow label directions for their use.
Conditions : Normal Watering for Outdoor Plants
Normal watering means that soil should be kept evenly moist and watered regularly, as conditions require. Most plants like 1 inch of water a week during the growing season, but take care not to over water. The first two years after a plant is installed, regular watering is important for establishment. The first year is critical. It is better to water once a week and water deeply, than to water frequently for a few minutes.
PlantingTools : Garden Rollers
Garden Rollers are metal or plastic drums that are pulled by hand or behind a garden tractor to firm and level soil once final grade has been established. Most rollers can be filled with water to make the drum heavier. It is common to roll a newly sodded lawn to ensure root to soil contact.
How-to : Lawn Soil Preparation
Soil should provide a good rooting environment that supplies adequate moisture, air, and nutrients. The new lawn site should first be worked to insure uniform drainage and water penetration. Remove old sod or existing weeds, which can prevent new seeds from rooting properly. This can be done by hand or with a nonselective herbicide that will kill roots too. Add limestone if the pH of your soil is too low (6.0 or lower); consult your garden center for specific rates to properly adjust pH. Also add a starter fertilizer, which is high in phosphorus (important for new root growth). Organic matter in the form of peat moss or rotted compost may be added at a rate of 1 cubic yard per 1000 sq. feet area . Rake all these materials together, smooth, then firm the seedbed with a roller prior to seeding. Finally soak the seeding area and keep it moist until you are ready to seed.
How-to : Lawn Seed Selection
When planning a lawn consider your climate and the use the lawn will get. Some species do not grow well when subjected to excess foot traffic, others form a denser mat which resists wear.
Grass seed are characterized according to temperature. Cool season grasses are best suited to the northern half of the United States, while warm season grasses are best for the southern half of the US. Cool season grasses, generally grown from seed, withstand cold winters, but suffer in hot, dry summer conditions and should not be mowed too closely. They are usually established during their active growing season, the cooler months.
Warm season grasses, can be seeded, grown from plugs (small circles of turf), sprigs (stolons or rhizomes) or sodded, and are more heat, drought and wear tolerant than cool season grasses. They also can be mowed more closely and will lose color when temperatures creep below 50 degrees F. Warm season grasses are usually established during their growing season, the warmer months. Sod can be layed any time of year.
Instead of a single type of seed, it may be preferable to go with a mixture of different types of seed. While a single type of seed will produce a lawn which looks more uniform, this lawn will be more susceptible to disease and other damage resulting in loss of the lawn. A mixture of seed will provide you with some insurance as a population of different grass types will be better able to survive any adversity.
Warm Season Grasses include: Common Bermuda, Hybrid Bermudas, Centepede, Zoysia, St. Augustine, Buffalo Grass, Bahaia. Cool Season Grasses include: Fescues, Perennial Bluegrass, Rye, Bentgrass.
How-to : Preparing Garden Beds
Use a soil testing kit to determine the acidity or alkalinity of the soil before beginning any garden bed preparation. This will help you determine which plants are best suited for your site. Check soil drainage and correct drainage where standing water remains. Clear weeds and debris from planting areas and continue to remove weeds as soon as they come up.
A week to 10 days before planting, add 2 to 4 inches of aged manure or compost and work into the planting site to improve fertility and increase water retention and drainage. If soil composition is weak, a layer of topsoil should be considered as well. No matter if your soil is sand or clay, it can be improved by adding the same thing: organic matter. The more, the better; work deep into the soil. Prepare beds to an 18 inch deep for perennials. This will seem like a tremendous amount of work now, but will greatly pay off later. Besides, this is not something that is easily done later, once plants have been established.
How-to : Pinching and Thinning Perennials
Once you plant a perennial, it does not mean that you will enjoy years of maintenance-free gardening. Perennials need to be cared for just like any other plant. One thing that distinguishes perennials is that they tend to be active growers that have to be thinned out occasionally or they will loose vigor.
As perennials establish, it is important to prune them back and thin them out occasionally. This will prevent them from completely taking over an area to the exclusion of other plants, and also will increase air circulation thereby reducing the incidence of diseases like botrytis and powdery mildew.
Many species also flower abundantly and produce ample seed. As blooms fade it is advisable to deadhead your plant; that is, to remove spent flowers before they form seed. This will prevent your plants from seeding all over the garden and will conserve the considerable energy it takes the plant to produce seed.
As perennials mature, they may form a dense root mass that eventually leads to a less vigorous plant. It is advisable to occasionally thin out a stand of such perennials. By dividing the root system, you can make new plants to plant in another area of the garden or give away. Also root pruning will stimulate new growth and rejuvenate the plant. Most perennials may be successfully divided in either spring or fall. Do a little homework; some perennials do have a preference.
How-to : Preparing Containers
Containers are excellent when used as an ornamental feature, a planting option when there is little or no soil to plant in, or for plants that require a soil type not found in the garden or when soil drainage in the garden is inferior. If growing more than one plant in a container, make sure that all have similar cultural requirements. Choose a container that is deep and large enough to allow root development and growth as well as proportional balance between the fully developed plant and the container. Plant large containers in the place you intend them to stay. All containers should have drainage holes. A mesh screen, broken clay pot pieces(crock) or a paper coffee filter placed over the hole will keep soil from washing out. The potting soil you select should be an appropriate mix for the plants you have chosen. Quality soils (or soil-less medias) absorb moisture readily and evenly when wet. If water runs off soil upon initial wetting, this is an indicator that your soil may not be as good as you think.
Prior to filling a container with soil, wet potting soil in the bag or place in a tub or wheelbarrow so that it is evenly moist. Fill container about halfway full or to a level that will allow plants, when planted, to be just below the rim of the pot. Rootballs should be level with soil line when project is complete. Water well.
How-to : Planting Perennials
Determine appropriate perennials for your garden by considering sun and shade through the day, exposure, water requirements, climate, soil makeup, seasonal color desired, and position of other garden plants and trees.
The best times to plant are spring and fall, when soil is workable and out of danger of frost. Fall plantings have the advantage that roots can develop and not have to compete with developing top growth as in the spring. Spring is more desirable for perennials that dislike wet conditions or for colder areas, allowing full establishment before first winter. Planting in summer or winter is not advisable for most plants, unless planting a more established sized plant.
To plant container-grown plants: Prepare planting holes with appropriate depth and space between. Water the plant thoroughly and let the excess water drain before carefully removing from the container. Carefully loosen the root ball and place the plant in the hole, working soil around the roots as you fill. If the plant is extremely root bound, separate roots with fingers. A few slits made with a pocket knife are okay, but should be kept to a minimum. Continue filling in soil and water thoroughly, protecting from direct sun until stable.
To plant bare-root plants: Plant as soon as possible after purchase. Prepare suitable planting holes, spread roots and work soil among roots as you fill in. Water well and protect from direct sun until stable.
To plant seedlings: A number of perennials produce self-sown seedlings that can be transplanted. You may also start your own seedling bed for transplanting. Prepare suitable planting holes, spacing appropriately for plant development. Gently lift the seedling and as much surrounding soil as possible with your garden trowel, and replant it immediately, firming soil with fingertips and water well. Shade from direct sun and water regularly until stable.
How-to : Seeding a Lawn
Late summer through early fall are generally the best times to sow grass seed. Sow the seed with a rotary spreader to assure uniform distribution. After seeding, roll the surface to ensure that the seeds are making good contact with the soil. Water seedbed thoroughly and keep it uniformly moist until all seed has sprouted (this may take 2 to 3 weeks). The first mowing cut should be high (about 2 inches) and make sure the mower blades are sharp.
How-to : Locating a Lawn
Lawns are the welcome-mat of the American suburban homestead. Many people take pride in showcasing their house with a thick, green, well maintained lawn. However a lush lawn doesn't just happen. Proper planning and maintenance is needed to get good results. When choosing a lawn site, remember more sun, the better. Red Fescue is probably the most shade tolerant grass, but even it does not take full shade well. Opt for ground covers in shade or beneath dense shade trees. Do not establish a lawn over exposed surface roots of trees or on slopes that would be dangerous to mow. This next step is to decide which type of grass is best suited to your area.
How-to : Laying Sod
Sod, is a ready-made lawn that was grown on a sod farm and harvested to be transplanted elsewhere. It is more expensive than seeding but it saves significant time compared to seeding. It is also useful on slopes or areas where erosion is a problem. Sod is essentially mature top growth, roots, and only a minimal amount of soil. When laying sod, first prepare the soil as you would when seeding. Then lay the rolls out on the bed and stagger the seams where strips end, pushing edges together tightly. If sodding on a slope, you may want to secure sod to ground with long pins or nails, which should be removed once roots have established. Keep well watered until the roots become established.
ProblemsPest : Mealybugs
Small, wingless, dull-white, soft-bodied insects that produce a waxy powdery covering. They have piercing/sucking mouth parts that suck the sap out of plant tissue. Mealybugs often look like small pieces of cotton and they tend to congregate where leaves and stems branch. They attack a wide range of plants. The young tend to move around until they find a suitable feeding spot, then they hang out in colonies and feed. Mealybugs can weaken a plant leading to yellow foliage and leaf drop. They also produce a sweet substance called honeydew (coveted by ants) which can lead to an unattractive black surface fungal growth called sooty mold.
Prevention and Control: Isolate infested plants from those that are not. Consult your local garden center professional or the Cooperative Extension office in your county for a legal insecticide/chemical recommendation. Encourage natural enemies such as lady beetles in the garden to help reduce population levels of mealy bugs.
Weeds : Preventing Weeds and Grass
Weeds rob your plants of water, nutrients and light. They can harbor pests and diseases. Before planting, remove weeds either by hand or by spraying an herbicide according to label directions. Another alternative is to lay plastic over the area for a couple of months to kill grass and weeds.
You may apply a pre-emergent herbicide prior to planting, but be sure that it is labeled for the plants you are wishing to grow. Existing beds may be spot sprayed with a nonselective herbicide, but be careful to shield those plants you do not want to kill. Non-selective means that it will kill everything it comes in contact with.
Mulch plants with a 3 inch layer of pinestraw, pulverized bark, or compost. Mulch conserves moisture, keeps weeds down, and makes it easier to pull when necessary.
Porous landscape or open weave fabric works too, allowing air and water to be exchanged.
MiscellaneousConditions : Erosion Control
Plants that help to control erosion have fibrous root systems that help to keep soil intact. Leaves and the overall form of a plant can prevent erosion by breaking up water droplets before they hit the ground, lessening splashing and runoff.
Glossary : Naturalizing
Naturalizing refers to planting in a random pattern, much as itwould occur in nature. If you spend any time in the woods, you've probably noticed that plants often grow in groups. The center of the group is dense and towards the edges, plants are located farther apart. Narcissus bulbs are easy to naturalize if you use this method: fill a bucket with bulbs and toss them out. Plant them where they fall. You will notice a portion of the bulbs are close together while the others have scattered farther away.
Glossary : Specimen
A specimen can be a tree, shrub, ground cover, annual, or perennial that is unique in comparison to the surrounding plants. Uniqueness may be in color, form, texture, or size. By using only one specimen plant in a visual area, it can be showcased. Specimen plants are accents in the landscape, just as statues, water features, or arbors.
Glossary : Evergreen
Evergreen refers to plants that hold onto their leaves or needles for more than one growing season, shedding them over time. Some plants such as live oaks are evergreen, but commonly shed the majority of their older leaves around the end of January.
Glossary : Seed Start
Seed Start: easily propagated from seed.
Glossary : pH
pH, means the potential of Hydrogen, is the measure of alkalinity or acidity. In horticulture, pH refers to the pH of soil. The scale measures from 0, most acid, to 14, most alkaline. Seven is neutral. Most plants prefer a range between 5.5 and about 6.7, an acid range, but there are plenty of other plants that like soil more alkaline, or above 7. A pH of 7 is where the plant can most easily absorb the most nutrients in the soil. Some plants prefer more or less of certain nutrients, and therefore do better at a certain pH.
Glossary : Landscape Uses
By searching Landscape Uses, you will be able to pinpoint plants that are best suited for particular uses such as trellises, border plantings, or foundations.
Glossary : U. S. Natives
Native plants require lower maintenance and usually have less pest problems. They are key components in the xeriphytic landscape and backyard wildlife habitat. Select your region and the search will look for all plants in the database that are native to your area.
How-to : Getting the Most Out of Cut Flowers
Cut flowers bring the garden into your home. While some cut flowers have a long vase life, most are highly perishable. How cut flowers are treated when you first bring them home can significantly increase how long they last.
The most important thing to consider is getting sufficient water taken up into the cut stem. Insufficient water can result in wilting and short-lived flowers. Bent neck of roses, where the flower head droops, is the result of poor water uptake. To maximize water uptake, first re-cut the stems at an angle so that the vascular system (the ""plumbing"" of the stem) is clear. Next immerse the cut stems in warm water.
Remember when the flower is cut, it is cut off from its food supply. Once water is taken care of, food is the resource that will run out next. The plants stems naturally feed the flowers with sugars. If you add a bit of sugar (1 tsp.) to the vase water, this will help feed the flower stems and extend their vase life.
Bacteria will build up in vase water and eventually clog up the stem so the flower cannot take up water. To prevent this, change the vase water frequently and make a new cut in the stems every few days.
Floral preservatives, available from florists, contain sugars, acids and bacteriacides that can extend cut flower life. These come in small packets and are generally available where cut flowers are sold. If used properly, these can extend the vase life of some cut flowers 2 to 3 times when compared with just plain water in the vase.
Glossary : Fertilize
Fertilize just before new growth begins with a complete fertilizer.