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Ophrys aranifera
( Spider Orchid )

A decidous, terrestrial orchid. The exotic, insect-like flowers bloom on upright racemes to 18 inches, late spring to mid-summer. Use terrestrial orchid potting mix and bright filtered light. When dormant, keep dry and temperate.
Important Info : Also known as O. sphegodes.


How to Grow this Plant:


Where can you buy this plant: Did you try Plant Finder?

Characteristics
Cultivar:n/a  
Family:Orchidaceae  
Size:Height: 0.33 ft. to 1.5 ft.
Width: 0 ft. to 0 ft.  
Plant Category:orchids,  
Plant Characteristics:high maintenance,  
Foliage Characteristics:deciduous,  
Foliage Color:green,  
Flower Characteristics:showy, unusual,  
Flower Color:greens, yellows,  
Tolerances: 
Requirements
Bloomtime Range:Late Spring to Mid Summer  
USDA Hardiness Zone:8 to 9  
AHS Heat Zone:Not defined for this plant  
Light Range:Part Shade to Full Sun  
pH Range:5.5 to 6.5  
Soil Range:Loam to Potting Soil  
Water Range:Dry to Normal  

Plant Care



Fertilizing
How-to : Fertilization for Annuals and Perennials

Annuals and perennials may be fertilized using: 1.water-soluble, quick release fertilizers; 2. temperature controlled slow-release fertilizers; or 3. organic fertilizers such as fish emulsion. Water soluble fertilizers are generally used every two weeks during the growing season or per label instructions. Controlled, slow-release fertilizers are worked into the soil ususally only once during the growing season or per label directions. For organic fertilizers such as fish emulsion, follow label directions as they may vary per product.

Light
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 : Dry Houseplants

Houseplants that do not require much water, or dry houseplants, should be allowed to dry out completely between waterings, especially in winter. When you do water, make sure that the soil is completely saturated and excess water runs out the bottom of the pot. Never water just a little bit as mineral salts will build up in soil. It is not uncommon for many plants that require moisture during the growing season to need less during the winter months when the plant is dormant. Cacti are probably the most well known drought tolerant plants, but even they need occasional waterings.

Conditions : Bright Light for Houseplants

Houseplants requiring bright light should be placed within 2 feet of an eastern or western exposure window or within 2 to 5 feet of a southern exposure window.

Watering
Conditions : Normal Watering for Houseplants

Houseplants that require normal watering should be watered so that soil is completely saturated and excess water runs out the bottom of the pot. Never water just a little bit; this allows mineral salts to build up in the soil. The key to normal watering is to allow the top inch or two of potting soil to dry out between waterings. Check frequently as certain times of the year may dictate that you water more frequently. Also, some plants that require normal watering during the growing season, may require less during the winter months when they are dormant.

Planting
How-to : Repotting Orchids

Potting Terrestrial Orchids Good drainage is important. Mix 3 parts fibrous peat, 3 parts coarse grit, 1 part perlite, and 1 part charcoal. Select a pot that will accommodate roots and about 2 years growth, but no more. Make sure that it has a drainage hole. Hold the orchid over the pot so that the crown is just below the rim of the pot. With your other hand, fill pot with moistened soil mix, tamping to firm. There really is no need to add crockery to the bottom of the pot, but you may want to add a small square of wire mesh or other permiable fabric over hole in bottom of pot. Potting Epiphytic Orchids Epiphytes prefer conditions where roots can be exposed, therefore, tight pots and close-contact soil mixes do not work well and will induce rot. Mix 3 parts dust-free, medium-grade bark, 1 part coarse grit or perlite, 1 part charcoal, and 1 part peat moss together, OR use a commercial orchid mix. As with the terrestrial orchid, select a pot that will accommodate roots and about 2 years growth, but no more. Make sure that it has a drainage hole. Even better, select an orchid pot, which has vertical slits down sides. Hold orchid over pot so that crown is just below the rim of the pot. With other hand, fill pot with moistened bark mix, tamping to firm. Some epiphytes do not need to be potted and prefer to grow on a mound or slab of bark. Until roots attach, tie orchid in place with fishing line. Constant humidity is a must. Support Orchids that have long flower stalks will need staking. Staking is best done as stem grows and before buds open. Many growers prefer to insert stake when potting orchid, but it is up to you.

Problems
Pest : Slugs and Snails

Slugs and snails favor moist climates and are mollusks, not insects. They can be voracious feeders, eating just about anything that is not woody or highly scented. They may eat holes in leaves, strip entire stems, or completely devour seedlings and tender transplants, leaving behind tell-tale silvery, slimy trails.

Prevention and control: Keep your garden as clean as possible, eliminating hiding places such as leaf debris, over-turned pots, and tarps. Groundcover in shady places and heavy mulches provide protection from the elements and can be favorite hiding places. In the spring, patrol for and destroy eggs (clusters of small translucent spheres) and adults during dusk and dawn. Set out beer traps from late spring through fall.

Many chemical controls are available on the market, but can be poisonous and deadly for children and pets; take care when using them - always read the label first!

Miscellaneous
Glossary : Deciduous

Deciduous refers to those plants that lose their leaves or needles at the end of the growing season.

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 : Flower Characteristics

Flower characteristics can vary greatly and may help you decide on a ""look or feel"" for your garden. If you're looking for fragrance or large, showy flowers, click these boxes and possibilities that fit your cultural conditions will be shown. If you have no preference, leave boxes unchecked to return a greater number of possibilities.

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