North America Native Plant

Ksid

Botanical name: Fagraea ksid

USDA symbol: FAKS

Life cycle: perennial

Habit: tree

Native status: Native to Pacific Basin excluding Hawaii  

Ksid (Fagraea ksid): A Rare Pacific Island Tree Worth Knowing If you’re drawn to unique native trees from tropical Pacific islands, you might have stumbled across the intriguing ksid tree. This lesser-known member of the Fagraea genus offers a glimpse into the remarkable plant diversity of the Pacific Basin, though ...

Ksid (Fagraea ksid): A Rare Pacific Island Tree Worth Knowing

If you’re drawn to unique native trees from tropical Pacific islands, you might have stumbled across the intriguing ksid tree. This lesser-known member of the Fagraea genus offers a glimpse into the remarkable plant diversity of the Pacific Basin, though growing it comes with some unique challenges.

What is Ksid?

Ksid (Fagraea ksid) is a perennial tree species native to the Pacific Basin, specifically found growing wild in Guam and Palau. As a true tree, ksid typically develops a single trunk and can reach impressive heights of 13-16 feet or more under the right conditions. Like other trees, it may occasionally develop a multi-stemmed growth form when faced with challenging environmental conditions.

Where Does Ksid Grow Naturally?

This Pacific native has a very limited natural range, occurring only in Guam and Palau. This restricted distribution makes it a special plant for those interested in authentic Pacific island flora.

Should You Plant Ksid in Your Garden?

Here’s where things get a bit tricky. While ksid sounds like it could be an interesting addition to a tropical garden, there’s limited information available about its specific growing requirements, care needs, and garden performance. This scarcity of horticultural information presents both challenges and opportunities:

The Challenges:

  • Very limited availability from nurseries or suppliers
  • Unclear growing requirements and care instructions
  • Unknown cold tolerance or USDA hardiness zones
  • Uncertain garden performance and aesthetic appeal

The Opportunities:

  • Supporting conservation of rare Pacific island flora
  • Growing something truly unique in your landscape
  • Contributing to horticultural knowledge of lesser-known species

Growing Conditions and Care

Since specific growing information for Fagraea ksid is limited, any cultivation attempts would need to be based on general knowledge of Pacific island trees and other Fagraea species. These plants typically prefer:

  • Warm, tropical or subtropical climates
  • Protection from cold temperatures
  • Adequate moisture without waterlogged conditions
  • Well-draining soil

However, without specific research on ksid’s particular needs, growing this tree would be somewhat experimental.

Wildlife and Ecological Benefits

As with many details about ksid, its specific wildlife benefits aren’t well documented. Native trees from Pacific islands often provide important habitat and food sources for local wildlife, but we’d need more research to understand ksid’s particular ecological role.

Alternative Options

If you’re interested in Pacific island native trees but want something with more available growing information, consider researching other Fagraea species or well-documented Pacific native trees that might be more readily available and better understood horticulturally.

The Bottom Line

Ksid represents one of those fascinating plants that highlights how much we still don’t know about the world’s flora. While it might not be the practical choice for most gardeners due to limited availability and growing information, it serves as a reminder of the incredible plant diversity in places like Guam and Palau. If you’re an adventurous gardener with experience growing rare tropical trees and happen to find ksid available from a reputable source, it could be an interesting conservation project – just be prepared for some trial and error along the way.

Ksid

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Gentianales

Family

Loganiaceae R. Br. ex Mart. - Logania family

Genus

Fagraea Thunb.

Species

Fagraea ksid Gilg & Gilg-Ben. - ksid

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