North America Native Plant

Yellowseed

Botanical name: Gymnosiphon

USDA symbol: GYMNO4

Life cycle: annual

Habit: forb

Native status: Native to Pacific Basin excluding Hawaii âš˜ Native to Puerto Rico  

Yellowseed (Gymnosiphon): A Rare Botanical Curiosity for Specialized Gardens If you’re looking for a showstopper plant to wow your neighbors, yellowseed probably isn’t your best bet. But if you’re the kind of gardener who gets excited about rare botanical specimens and loves to collect unusual plants, Gymnosiphon might just pique ...

Yellowseed (Gymnosiphon): A Rare Botanical Curiosity for Specialized Gardens

If you’re looking for a showstopper plant to wow your neighbors, yellowseed probably isn’t your best bet. But if you’re the kind of gardener who gets excited about rare botanical specimens and loves to collect unusual plants, Gymnosiphon might just pique your interest. This little-known genus represents one of nature’s more understated creations – and that’s putting it kindly!

What Exactly Is Yellowseed?

Gymnosiphon, commonly known as yellowseed, is a forb – which is just a fancy way of saying it’s a non-woody plant that dies back to the ground each year or every few years. Think of it as the botanical equivalent of that quiet person at parties who has fascinating stories if you take the time to listen. These plants can be either annual or perennial, depending on the specific species and growing conditions.

As forbs, yellowseed plants lack significant woody tissue above ground and have their growing points (called perennating buds) either at or below the soil surface. This adaptation helps them survive challenging conditions by essentially hiding underground when times get tough.

Where Does Yellowseed Come From?

Yellowseed is native to some pretty exotic locations that most of us only dream of visiting. You’ll find these plants naturally occurring in parts of the Pacific Basin (though not in Hawaii) and Puerto Rico. Currently, they’re documented in Palau and Puerto Rico, making them quite the exclusive club members in terms of geographic distribution.

Should You Grow Yellowseed in Your Garden?

Here’s where I need to be honest with you: yellowseed probably isn’t going to earn you any garden design awards. These plants are what botanists politely call inconspicuous, which is code for you might walk right past them without noticing. They’re small, not particularly showy, and definitely won’t be the conversation starter at your next garden party.

However, there are a few scenarios where you might consider yellowseed:

  • You’re a serious plant collector with a passion for rare species
  • You’re creating a specialized botanical collection
  • You have a particular interest in Pacific or Caribbean flora
  • You enjoy the challenge of growing unusual plants

Growing Conditions and Care

If you’re determined to give yellowseed a try, you’ll need to recreate its tropical homeland conditions. These plants are only suited for USDA hardiness zones 10-11, which means most of us will need to treat them as houseplants or greenhouse specimens.

Based on their natural habitat, yellowseed likely prefers:

  • Warm, humid conditions year-round
  • Partial to full shade
  • Well-draining but consistently moist soil
  • Protection from cold temperatures

Unfortunately, specific care instructions are hard to come by since these plants aren’t commonly cultivated. You’ll need to experiment and observe how your plant responds to different conditions.

The Reality Check

Let’s be real: finding yellowseed for your garden will be like searching for a needle in a haystack. These plants aren’t available at your local garden center, and you probably won’t find them in most specialty catalogs either. If you do manage to locate seeds or plants, expect to pay premium prices for what is essentially a botanical curiosity.

For most gardeners, especially those in temperate climates, you’d be better off focusing on native plants that are actually suited to your region and provide real ecological benefits. If you’re in the continental United States, consider exploring native forbs from your local area that will support pollinators, birds, and other wildlife while being much easier to grow and maintain.

The Bottom Line

Gymnosiphon yellowseed is one of those plants that’s more interesting to read about than to actually grow. Unless you’re a dedicated botanical collector with the right climate and a lot of patience, you’ll probably want to admire this species from afar and put your gardening energy into plants that will give you more bang for your buck.

If you’re fascinated by unique plant species but want something more practical, research native forbs in your area. You’ll find plenty of interesting options that are better adapted to your local conditions and will actually contribute to your local ecosystem – now that’s what I call a win-win!

Yellowseed

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Orchidales

Family

Burmanniaceae Blume - Burmannia family

Genus

Gymnosiphon Blume - yellowseed

Species

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