North America Non-native Plant

Silk-cotton Tree

Botanical name: Cochlospermum religiosum

USDA symbol: CORE11

Native status: Not native but doesn't reproduce and persist in the wild

Silk-Cotton Tree: A Tropical Beauty for Warm Climate Gardens If you’re lucky enough to garden in a tropical or subtropical climate, you might want to consider the stunning silk-cotton tree (Cochlospermum religiosum). This eye-catching deciduous tree brings a burst of golden sunshine to landscapes with its spectacular yellow blooms and ...

Silk-Cotton Tree: A Tropical Beauty for Warm Climate Gardens

If you’re lucky enough to garden in a tropical or subtropical climate, you might want to consider the stunning silk-cotton tree (Cochlospermum religiosum). This eye-catching deciduous tree brings a burst of golden sunshine to landscapes with its spectacular yellow blooms and distinctive palmate leaves.

What Is a Silk-Cotton Tree?

The silk-cotton tree is a tropical flowering tree native to Asia, particularly found across India, Myanmar, Thailand, and other parts of Southeast Asia. Don’t let the name fool you – this isn’t your typical cotton plant! Instead, it’s a deciduous tree that puts on quite a show when it blooms.

Why You Might Love This Tree

There’s a lot to appreciate about Cochlospermum religiosum if you’re looking for a statement piece in your warm-climate garden:

  • Stunning flowers: Large, bright yellow, five-petaled blooms that are absolutely gorgeous
  • Pollinator magnet: Bees, butterflies, and other beneficial insects love the nectar-rich flowers
  • Unique foliage: Distinctive hand-shaped (palmate) leaves add interesting texture
  • Specimen potential: Makes an excellent focal point or shade tree in larger landscapes

Growing Conditions and Care

Before you fall head-over-heels for this tropical beauty, make sure you can provide what it needs:

Climate Requirements: This tree is only suitable for USDA hardiness zones 10-12, which means it needs consistently warm temperatures year-round. If you experience any frost or freezing temperatures, this isn’t the tree for you.

Sun and Soil: Give your silk-cotton tree plenty of full sun and well-draining soil. Like many tropical plants, it doesn’t appreciate waterlogged roots.

Watering: Provide regular watering during the growing season, but allow the soil to dry out somewhat between waterings.

Is This Tree Right for Your Garden?

The silk-cotton tree works best in:

  • Large tropical or subtropical gardens
  • Botanical gardens and arboretums
  • Spacious landscapes where it can serve as a specimen tree
  • Areas where you want to attract pollinators

A Word About Native Alternatives

While Cochlospermum religiosum can be a beautiful addition to appropriate climates, consider exploring native trees in your area first. Native plants typically require less maintenance, support local wildlife better, and are naturally adapted to your specific growing conditions. Check with your local native plant society or extension office for tropical flowering trees native to your region.

The Bottom Line

If you garden in zones 10-12 and have space for a medium to large tree, the silk-cotton tree could be a stunning addition to your landscape. Its bright yellow flowers and pollinator benefits make it an attractive choice for warm-climate gardeners looking for something a bit different. Just remember to source your plant responsibly and consider native alternatives that might provide even greater benefits to your local ecosystem.

Silk-cotton Tree

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Violales

Family

Bixaceae Kunth - Lipstick-tree family

Genus

Cochlospermum Kunth - cochlospermum

Species

Cochlospermum religiosum (L.) Alston - silk-cotton tree

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA