North America Native Plant

Silky Celtis

Botanical name: Celtis paniculata

USDA symbol: CEPA6

Life cycle: perennial

Habit: tree

Native status: Native to Pacific Basin excluding Hawaii  

Silky Celtis: A Hidden Gem for Pacific Island Gardens If you’re gardening in the tropical Pacific and looking for a native tree that’s both beautiful and low-maintenance, let me introduce you to the silky celtis (Celtis paniculata). This underappreciated native gem might just be the perfect addition to your island ...

Silky Celtis: A Hidden Gem for Pacific Island Gardens

If you’re gardening in the tropical Pacific and looking for a native tree that’s both beautiful and low-maintenance, let me introduce you to the silky celtis (Celtis paniculata). This underappreciated native gem might just be the perfect addition to your island landscape.

What is Silky Celtis?

Silky celtis, also known as investigator-tree, is a native perennial tree species that calls the Pacific Basin home. As a true native, this tree has evolved alongside the local ecosystem and is perfectly adapted to island life. It’s a proper tree with a single trunk that typically grows taller than 13-16 feet, though in some conditions it might develop a more compact, multi-stemmed form.

Where Does It Grow Naturally?

This Pacific native has a limited but special range. You’ll find silky celtis growing naturally in Guam and Palau, where it has thrived for countless generations as part of the native flora.

Why Consider Silky Celtis for Your Garden?

There are several compelling reasons to give this native tree a spot in your landscape:

  • Native benefits: As a true native, it supports local wildlife and fits naturally into the Pacific island ecosystem
  • Low maintenance: Once established, silky celtis is remarkably self-sufficient
  • Tropical charm: It provides that authentic island garden feel you can’t get from non-native species
  • Coastal tolerance: Well-adapted to the challenging coastal conditions of Pacific islands

What Does It Look Like?

Silky celtis has a understated beauty that grows on you. The tree features smooth, gray bark and small, oval-shaped leaves that create lovely dappled shade. While the flowers are small and not particularly showy, they’re followed by small orange to red fruits that add subtle color to the canopy.

Growing Conditions and Care

The beauty of working with native plants is that they’re already perfectly suited to your local conditions. Silky celtis thrives in:

  • Climate: Warm tropical temperatures year-round (USDA zones 10-12)
  • Soil: Adaptable to various soil types, as long as drainage is decent
  • Location: Handles coastal conditions well, making it perfect for island gardens
  • Maintenance: Minimal care needed once established

Planting and Care Tips

Getting your silky celtis off to a good start is straightforward:

  • Plant during the warmer months when growth is most active
  • Water regularly during the first year while the tree establishes its root system
  • Once established, occasional watering during particularly dry periods is usually sufficient
  • Little to no pruning needed – let it grow naturally
  • Mulch around the base to retain moisture and suppress weeds

Wildlife and Pollinator Benefits

While we don’t have extensive documentation of all its wildlife interactions, as a native Pacific tree, silky celtis likely provides habitat and food sources for local birds and insects. The small flowers attract native pollinators, and the fruits may provide food for island wildlife.

Is Silky Celtis Right for Your Garden?

Silky celtis is an excellent choice if you’re gardening in Guam, Palau, or similar tropical Pacific locations and want to incorporate more native species into your landscape. It’s particularly well-suited for:

  • Native plant gardens
  • Coastal landscapes
  • Low-maintenance tropical gardens
  • Wildlife-friendly landscapes

However, this tree is only suitable for tropical climates in zones 10-12. If you’re gardening outside the Pacific Basin, you’ll want to look for native alternatives suited to your specific region.

The Bottom Line

Silky celtis may not be the showiest tree in the tropical garden, but it brings something invaluable: authentic native character and ecological harmony. For Pacific island gardeners looking to create landscapes that honor and support their local environment, this understated native deserves serious consideration. Plus, there’s something deeply satisfying about growing a tree that truly belongs in your corner of the world.

Silky Celtis

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Hamamelididae

Order

Urticales

Family

Ulmaceae Mirb. - Elm family

Genus

Celtis L. - hackberry

Species

Celtis paniculata (Endl.) Planch. - silky celtis

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