North America Non-native Plant

Hartweg’s Cyphomandra

Botanical name: Cyphomandra hartwegii

USDA symbol: CYHA12

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

Synonyms: Cyphomandra costaricensis Donn. Sm. (CYCO17)   

Hartweg’s Cyphomandra: A Mysterious Plant with Limited Information If you’ve stumbled upon the name Hartweg’s cyphomandra (Cyphomandra hartwegii) in your plant research, you’re likely dealing with one of botany’s more elusive species. This plant presents a fascinating case study in how botanical names can sometimes lead us down rabbit holes ...

Hartweg’s Cyphomandra: A Mysterious Plant with Limited Information

If you’ve stumbled upon the name Hartweg’s cyphomandra (Cyphomandra hartwegii) in your plant research, you’re likely dealing with one of botany’s more elusive species. This plant presents a fascinating case study in how botanical names can sometimes lead us down rabbit holes of taxonomic confusion and limited documentation.

What We Know About Hartweg’s Cyphomandra

Cyphomandra hartwegii, commonly known as Hartweg’s cyphomandra, belongs to a genus that has undergone significant taxonomic reshuffling over the years. The plant is also known by the synonym Cyphomandra costaricensis, which provides a hint about its possible Central American connections.

Unfortunately, concrete information about this specific species is remarkably scarce in contemporary botanical and horticultural literature. This lack of documentation could indicate several possibilities: the plant may be extremely rare, it might have been reclassified under a different genus, or it could be a historical name that’s no longer widely recognized in modern taxonomy.

The Geographic Mystery

While we don’t have specific distribution data for Cyphomandra hartwegii, the genus name and synonym suggest possible ties to Central or South American regions. However, without verified documentation, it’s impossible to pinpoint exactly where this plant naturally occurs.

Growing Challenges and Considerations

Here’s where things get tricky for gardeners: with virtually no available information about growing conditions, hardiness zones, care requirements, or even basic plant characteristics, attempting to cultivate Cyphomandra hartwegii would be a shot in the dark.

We don’t know:

  • What climate conditions it prefers
  • How large it grows
  • Whether it’s an annual, perennial, or woody plant
  • Its water and soil requirements
  • Its potential benefits to pollinators or wildlife

What This Means for Gardeners

If you’re interested in Hartweg’s cyphomandra specifically, you might be pursuing a botanical ghost. The lack of available information suggests this isn’t a plant you’re likely to find at your local nursery or even through specialty plant dealers.

For gardeners interested in exploring unique or lesser-known species, this situation highlights the importance of choosing well-documented plants, especially when you’re hoping to create habitat for local wildlife or contribute to conservation efforts.

Better Alternatives to Consider

If you’re drawn to unusual or hard-to-find plants, consider focusing your energy on well-documented native species in your area. These plants offer several advantages:

  • Proven track records for successful cultivation
  • Known benefits to local wildlife and pollinators
  • Available growing guides and care information
  • Support for local ecosystems

Your local native plant society or extension office can point you toward interesting native species that will thrive in your specific conditions while supporting the local environment.

The Bottom Line

While Hartweg’s cyphomandra remains an intriguing botanical puzzle, the lack of available information makes it impractical for most gardening purposes. Sometimes the most responsible approach is to admire a plant’s mystery from afar while choosing better-documented species for our actual gardens.

If you have specific information about successfully growing Cyphomandra hartwegii, the gardening community would certainly benefit from your experience. Until then, this species remains one of botany’s more elusive characters.

Hartweg’s Cyphomandra

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

Solanales

Family

Solanaceae Juss. - Potato family

Genus

Cyphomandra Mart. ex Sendtn. - cyphomandra

Species

Cyphomandra hartwegii (Miers) Dunal - Hartweg's cyphomandra

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