This heat resistant plant does best when grown in part shade to full sun. Originating in Madagascar, the deciduous shrub may sometimes be considered a small tree as it grows to 25 feet tall. Leaves are oval and green and flowers bell-shaped and tubular. Uncarina blooms easily, and when covered with flowers, it is a striking vision. The seed capsules feature small hooked harpoons. Water abundantly when actively growing and keep dry when dormant. Uncarina decaryi Humbert is a related species with similar flowers, but its leaves are more deeply lobed.Important Info : This plant will grow back from the roots if not frozen for too long.
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Size: Height: 0 ft. to 30 ft.
Width: 0 ft. to 15 ft.
Plant Category: shrubs, trees,
Plant Characteristics: irregular growth habit,
Foliage Characteristics: deciduous, evergreen,
Flower Characteristics: showy,
Flower Color: yellows,
Tolerances: heat & humidity,
Bloomtime Range: Year Round
USDA Hardiness Zone: 10 to 11
AHS Heat Zone: Not defined for this plant
Light Range: Dappled to Full Sun
pH Range: 5 to 7.5
Soil Range: Some Sand to Some Clay
Water Range: Dry to Normal
FertilizingHow-to : Fertilization for Young Plants
Young plants need extra phosphorus to encourage good root development. Look for a fertilizer that has phosphorus, P, in it(the second number on the bag.) Apply recommended amount for plant per label directions in the soil at time of planting or at least during the first growing season.
How-to : Fertilization for Established Plants
Established plants can benefit from fertilization. Take a visual inventory of your landscape. Trees need to be fertilized every few years. Shrubs and other plants in the landscape can be fertilized yearly. A soil test can determine existing nutrient levels in the soil. If one or more nutrients is low, a specific instead of an all-purpose fertilizer may be required. Fertilizers that are high in N, nitrogen, will promote green leafy growth. Excess nitrogen in the soil can cause excessive vegetative growth on plants at the expense of flower bud development. It is best to avoid fertilizing late in the growing season. Applications made at that time can force lush, vegetative growth that will not have a chance to harden off before the onset of cold weather.
How-to : Fertilizing Houseplants
Houseplants may be fertilized with: 1. water-soluble, quick release fertilizers; 2. temperature controlled slow-release fertilizers; 3. or organic fertilizers such as fish emulsion. Water soluble fertilizers are used every two weeks or per label instructions. Controlled, slow-release fertilizers are carefully worked into the soil usually only once during the growing season or per label directions. For organic fertilizers, such as fish emulsion, follow label directions. Allow houseplants to 'rest' during the winter months; stop fertilizing in late October and resume feeding in late February.
LightConditions : Full Sun
Full Sun is defined as exposure to more than 6 hours of continuous, direct sun per day.
WateringConditions : Dry Plants
Dry plants do not tolerate water logged soils and require very little water. Many cacti and succulents fall into this group. Water only when soil becomes completely dry. When watering, do so slowly for a long period of time so that topsoil does not wash away and so that soil has ample time to become moist enough to accept water. It is much better to water for a long time and less frequently allowing soil to dry out completely between waterings.
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.
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.
PlantingHow-to : Planting Shrubs
Dig a hole twice the size of the root ball and deep enough to plant at the same level the shrub was in the container. If soil is poor, dig hole even wider and fill with a mixture half original soil and half compost or soil amendment.
Carefully remove shrub from container and gently separate roots. Position in center of hole, best side facing forward. Fill in with original soil or an amended mixture if needed as described above. For larger shrubs, build a water well. Finish by mulching and watering well.
If the plant is balled-and-burlapped, remove fasteners and fold back the top of natural burlap, tucking it down into hole, after you've positioned shrub. Make sure that all burlap is buried so that it won't wick water away from rootball during hot, dry periods. If synthetic burlap, remove if possible. If not possible, cut away or make slits to allow for roots to develop into the new soil. For larger shrubs, build a water well. Finish by mulching and watering well.
If shrub is bare-root, look for a discoloration somewhere near the base; this mark is likely where the soil line was. If soil is too sandy or too clayey, add organic matter. This will help with both drainage and water holding capacity. Fill soil, firming just enough to support shrub. Finish by mulching and watering well.