North America Native Plant

Sicyosperma

Botanical name: Sicyosperma

USDA symbol: SICYO2

Life cycle: annual

Habit: vine

Native status: Native to the lower 48 states  

Sicyosperma: The Mysterious Native Annual You’ve Probably Never Heard Of If you’re scratching your head wondering what in the world sicyosperma is, you’re not alone! This little-known native plant is one of those botanical mysteries that even experienced gardeners might not recognize. But sometimes the most obscure plants have the ...

Sicyosperma: The Mysterious Native Annual You’ve Probably Never Heard Of

If you’re scratching your head wondering what in the world sicyosperma is, you’re not alone! This little-known native plant is one of those botanical mysteries that even experienced gardeners might not recognize. But sometimes the most obscure plants have the most interesting stories to tell.

What Exactly Is Sicyosperma?

Sicyosperma is a native annual forb that calls the American Southwest home. Now, before you glaze over at the word forb, it simply means this plant is an herbaceous flowering plant that isn’t a grass or sedge – think of it as nature’s way of saying miscellaneous wildflower. Unlike woody shrubs or trees, sicyosperma is soft-stemmed and completes its entire life cycle in just one growing season.

As an annual, this plant has a live fast, bloom hard approach to life. It germinates, grows, flowers, sets seed, and dies all within a single year – which can be both a blessing and a curse for gardeners.

Where Does Sicyosperma Call Home?

This native plant has a pretty exclusive address – you’ll only find sicyosperma growing naturally in Arizona and New Mexico. It’s what we call a regional endemic, meaning it has evolved to thrive in the specific conditions of the southwestern United States.

Should You Grow Sicyosperma in Your Garden?

Here’s where things get tricky – and honestly, a bit frustrating for us plant nerds. While sicyosperma has the appeal of being a true native species (which is always a plus in our book), there’s surprisingly little information available about its cultivation, appearance, or ecological benefits.

This lack of readily available information suggests a few possibilities:

  • It might be quite rare in the wild
  • It could be challenging to cultivate
  • It may simply be so specialized that few people have attempted to grow it
  • Commercial seed may not be readily available

The Reality Check

If you’re located in Arizona or New Mexico and you’re curious about this mysterious native, here’s our honest advice: you might want to start with better-documented native alternatives first. The Southwest is blessed with incredible native plants like desert marigold, brittlebush, or penstemon species that are well-understood, readily available, and proven garden performers.

That said, if you’re the adventurous type who loves botanical mysteries and you happen to come across sicyosperma seed from a reputable native plant source, it could be an interesting addition to a native plant collection or naturalized area.

Growing Tips (What Little We Know)

Since sicyosperma is native to Arizona and New Mexico, we can make some educated guesses about its preferences:

  • It likely prefers well-draining soils (most southwestern natives do)
  • It probably tolerates drought conditions once established
  • As an annual, it will need to reseed itself to return each year
  • It may prefer full sun to partial shade

However, we want to be upfront with you – these are educated guesses based on its native habitat, not proven cultivation advice.

The Bottom Line

Sicyosperma represents one of those intriguing gaps in our gardening knowledge. While we love celebrating native plants, we also believe in being honest about what we do and don’t know. If you’re passionate about southwestern natives and want to experiment with lesser-known species, sicyosperma might be worth investigating further. Just don’t expect to find a wealth of growing guides or readily available seeds.

For most gardeners, especially beginners, we’d recommend starting with well-documented native alternatives that offer proven benefits to local wildlife and ecosystems. But hey, if you do decide to take on the sicyosperma challenge, we’d love to hear about your experience!

Sicyosperma

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

Cucurbitaceae Juss. - Cucumber family

Genus

Sicyosperma A. Gray - sicyosperma

Species

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