Strophanthus preussii - Poison Arrow Vine, Medusa Flower


Strophanthus preussii - Poison Arrow Vine, Medusa Flower

Large shrub 5-10 ft tallVine or creeper plantSemi-shadeRegular waterRed, crimson, vinous flowersWhite, off-white flowersPlant attracts butterflies, hummingbirdsDeciduous plantFragrant plantSubtropical or temperate zone plant. Mature plant cold hardy at least to 30s F for a short time

Origin: Tropical West Africa. A curious flower! Wild and unusual floral display arrives from late spring to fall on this shrubby vine. Clusters of cream-colored flowers bedecked with long, curly streamers and a rust-tinted throat. Occurring off-and-on throughout the year, flowering is heaviest in spring and summer. The faintly fragrant flowers are short trumpets with five curled petals that are very light pink (aging to creamy light yellow) with a reddish brown base. The tips of the petals become narrowed and elongated, forming a twisting, sticky string that dangles down from the flower and touches lower leaves. During winter might drop leaves.

Recommended Fertilizer: SUNSHINE Megaflor - Bloom Nutrition Booster
Grown in
6"/1 gal pot
 

Plant form
Bush
Mature height
5-10 ft tall
Sun exposure
Semi-shade
USDA zone
Zone 9-11.
Hardiness
Light freezing, 30F for short period of time, mature plants. Young plants must be protected.
Watering
Regular watering
Flower color
White and off-white flowers, Red, crimson, vinous flowers
Growing conditions
Outdoors in the suitable USDA zone, Small backyard, Pot-growing, Indoors
Deciduous
Deciduous plant
Fragrance
Fragrant plant
Butterfly attractor
Plant attracts butterflies, hummingbirds
More information

This item is certified for shipping to California, Texas, Louisiana, Arizona.

Strophanthus preussii - Poison Arrow Vine, Medusa Flower: Planting and Care Instructions

Plant Overview

Growth habit: This plant grows as a medium-sized bush, about 5 to 10 feet tall. It is easy to manage, fits well in most garden spaces, and can also be grown in a large container or shaped through pruning to suit smaller areas.

Growing conditions: This plant can be grown outdoors in the suitable USDA zone. It is well-suited for small backyards, pots, or indoor spaces with enough light.

Watering: This plant requires regular watering. Water it when the top layer of soil begins to dry out.

Sun exposure: This plant prefers semi-shade. It grows well in places that get filtered sunlight or partial sun during the day.

USDA Zone: Zone 9-11. The USDA Plant Hardiness Zone Map categorizes North America into zones based on average annual minimum winter temperatures, each differing by 10 °F. This map serves as a basic guide for selecting appropriate plants for a region. However, it's not definitive; plant varieties vary in cold tolerance, and young plants typically need more protection. Additionally, local microclimates, like sheltered areas or sunny spots, can influence plant health and survivability beyond the general zone recommendation.

Hardiness: Light freezing, 30F for short period of time, mature plants. Young plants must be protected. Plant hardiness indicates the coldest temperature a mature plant can endure briefly while staying healthy. This rating is a guideline and can vary among varieties of the same species. Young plants often need more cold protection. Additionally, a plant's survival can be enhanced by the microclimate of its location, which may provide shelter from wind or extra warmth, allowing it to thrive beyond its typical hardiness range.

Flower color: This plant produces white and off-white, and red, crimson, or vinous flowers during its blooming season.

Deciduous plant: This is a deciduous plant, meaning it sheds its leaves seasonally. During the winter period, it may appear bare or dormant, but this is a natural part of its cycle. Minimal watering and protection from extreme cold may be needed, depending on the plant and climate.

Fragrance: This plant is known for its pleasant fragrance, adding a lovely scent to gardens or indoor spaces.

Butterfly attractor: This plant attracts butterflies and hummingbirds, making it a great choice for pollinator-friendly gardens.

Outdoor planting

Plant in well-draining soil and choose a location that matches the plant light and space needs. Improve poor soils by mixing in compost or organic matter. Dig a hole twice as wide and no deeper than the root ball - planting too deep can harm the plant. For better drainage, position the plant so the top of the root ball is slightly above ground level. Water thoroughly after planting. Outdoor plants may need temporary shade during the first weeks to protect them from strong sun or heat. Watch the soil moisture closely and water regularly until the plant is well established. Apply mulch around the base to help retain moisture and reduce weeds, forming a shallow basin to hold water. Keep mulch a few inches away from the trunk or stem to prevent rot.

Indoor planting

Use a container with drainage holes and a well-draining potting mix. Position the plant so that the top of the root ball is level with the surface of the soil - avoid planting too deep. A slow-release fertilizer can be mixed into the soil at planting time to support healthy growth. Place the plant in a location that matches its light needs, and water according to its care requirements. Be careful not to overwater, and ensure good airflow around the plant to reduce the risk of pests and disease.

Protecting Plants in Winter

When it gets cold, some plants need extra help. You can move potted plants indoors or under a covered patio. Young plants need extra protection because they are more sensitive to cold and less established. For plants in the ground, use frost cloth to keep them warm. Stop using fertilizer in late fall so plants can rest. Try to place plants in areas protected from cold wind, rain, and frost.

Cold Hardiness and Microclimates

USDA zone and hardiness are only general guidelines. Actual cold tolerance can vary based on plant variety and local conditions. Even small differences between varieties can matter. Also, warmer spots in your yard—like near a wall or fence—can help plants survive cold nights. These little warm areas are called microclimates, and they make a big difference.

Outdoor and indoor planting instructions