Couroupita guianensis - Cannonball Tree


Couroupita guianensis - Cannonball Tree

Large tree taller than 20 ftSemi-shadeFull sunModerate waterYellow, orange flowersRed, crimson, vinous flowersPink flowersSubtropical or temperate zone plant. Mature plant cold hardy at least to 30s F for a short time

Cannon ball Tree. Rare tree with a bizarre fruit that can be seen only in tropical botanic gardens and a few larger private gardens. It is a very tall tree which sheds its large, elliptical leaves several times a year. The pinkish-red flowers grow directly from the trunk near the base of the crown and are strongly scented in the evening. Blooms year round. Flowers are followed by large, globular fruit, reddish-brown in color, which do indeed resemble cannonballs and remain on the tree for many months. On older trees there may be dozens of fruits and flower clusters at the same time.
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Recommended Fertilizer: SUNSHINE Megaflor - Bloom Nutrition Booster
Grown in
10"/3 gal pot
 

Plant form
Tree
Mature height
20 or more ft tall
Sun exposure
Full sun or bright light indoor, Semi-shade
USDA zone
Zone 9-11.
Hardiness
Light freezing, 30F for short period of time, mature plants. Young plants must be protected.
Watering
Moderate watering
Flower color
Pink flowers, Red, crimson, vinous flowers, Yellow, orange flowers
Growing conditions
Outdoors in the suitable USDA zone, Large backyard
More information

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

Couroupita guianensis - Cannonball Tree: Planting and Care Instructions

Plant Overview

Growth habit: This plant grows into a tall tree, reaching over 20 feet when planted in the ground, making it a great choice for large gardens or open areas where shade is welcome. However, it can be trimmed to maintain a more compact shape and may also be grown in a large container with proper care.

Growing conditions: This plant can be grown outdoors in the suitable USDA zone. It is ideal for planting in large backyard spaces where it has room to spread, but it can also be trimmed and maintained in a large container with proper care.

Watering: This plant needs moderate watering. Allow the top of the soil to dry slightly before watering again.

Sun exposure: This plant grows well in both full sun and semi-shade. If kept indoors, give it as much light as possible for best growth.

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 pink, red, crimson, or vinous, and yellow or orange flowers during its blooming season.

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