Western Purple Cranesbill: A Rare Rocky Mountain Native Worth Knowing
If you’re passionate about native gardening in the Rocky Mountain region, you might have stumbled across the intriguing western purple cranesbill (Geranium atropurpureum var. cowenii). This lesser-known native geranium is a fascinating addition to the world of indigenous wildflowers, though it comes with some important considerations for the conscientious gardener.
What Makes This Plant Special?
Western purple cranesbill is a perennial forb – essentially a non-woody flowering plant that returns year after year. Unlike its flashier garden cousins, this native geranium has adapted specifically to life in the American West, making it a true regional treasure.
You might also encounter this plant listed under its synonyms, including Geranium cowenii or Geranium fremontii var. cowenii, which can make tracking down information about it feel like a botanical treasure hunt!
Where Does It Call Home?
This native beauty has a fairly limited range, naturally occurring in Colorado and Wyoming. Its restricted distribution makes it a special representative of Rocky Mountain flora, perfectly adapted to the unique conditions of this high-elevation region.
- Species observed
- No observations
A Word of Caution: Rarity Matters
Here’s where things get important for responsible gardeners. Western purple cranesbill appears to have conservation concerns, with a rarity status that suggests limited populations in the wild. This means that while it’s a wonderful native plant, it’s crucial to source any plants or seeds responsibly.
If you’re interested in growing this species, always:
- Purchase from reputable native plant nurseries that propagate their own stock
- Never collect from wild populations
- Consider it a conservation effort as much as a gardening project
Growing Western Purple Cranesbill
As a Rocky Mountain native, this perennial forb is likely adapted to challenging conditions including intense sunlight, temperature fluctuations, and well-draining soils typical of higher elevations. However, specific growing requirements for this particular variety are not well-documented, which adds to both its mystery and the challenge of cultivation.
Given its native range in Colorado and Wyoming, it’s probably hardy in USDA zones that correspond to these mountainous regions, likely zones 3-6, though this should be verified with any nursery source.
Should You Grow It?
The decision to grow western purple cranesbill comes down to your commitment to conservation and native plant gardening. If you can source it responsibly and you’re gardening in its native range, it could be a meaningful addition to a native wildflower garden or naturalized landscape.
However, given the limited information and apparent rarity, you might also consider other native geraniums that are more readily available and better documented, such as sticky purple geranium (Geranium viscosissimum) or Richardson’s geranium (Geranium richardsonii), which offer similar ecological benefits with less conservation concern.
The Bottom Line
Western purple cranesbill represents the fascinating diversity of native plants in the Rocky Mountain region. While it may not be the easiest native to find or grow, it serves as a reminder of why protecting and celebrating our regional flora matters. If you do encounter it in the wild, take a moment to appreciate this rare beauty – and perhaps consider it inspiration to explore the many other native geraniums that might be perfect for your garden.