Rocky Mountain Hemlockparsley: A Hidden Gem for Western Native Gardens
If you’re looking to add some delicate beauty and ecological value to your western garden, let me introduce you to a charming native that often flies under the radar: Rocky Mountain hemlockparsley (Conioselinum scopulorum). This understated perennial might not have the flashiest name, but it’s got personality and purpose in spades!



What Is Rocky Mountain Hemlockparsley?
Rocky Mountain hemlockparsley is a native perennial forb that belongs to the carrot family. Don’t worry – despite its hemlock moniker, this plant is perfectly safe for your garden (just don’t confuse it with poison hemlock, which is an entirely different troublemaker). This gentle native grows as a non-woody plant, meaning it dies back to the ground each winter and returns fresh each spring.
Where Does It Call Home?
This mountain lover is truly a western native, naturally occurring across six western states: Arizona, Colorado, Montana, New Mexico, Utah, and Wyoming. You’ll find it thriving in the higher elevations and mountainous regions of these areas, where it has adapted to the unique growing conditions of the American West.
Why Your Garden Will Love This Native
There are several compelling reasons to consider adding Rocky Mountain hemlockparsley to your landscape:
- True native credentials: As a plant native to the lower 48 states, it supports local ecosystems and wildlife
- Pollinator magnet: Its delicate umbel flowers (think tiny white flower clusters) are fantastic for attracting native bees and other beneficial insects
- Low-maintenance once established: Native plants are naturally adapted to local conditions
- Wetland flexibility: With its facultative wetland status, it can handle both moist and occasionally drier conditions
Perfect Garden Roles
Rocky Mountain hemlockparsley shines in several garden settings:
- Native plant gardens and naturalized landscapes
- Rain gardens and bioswales
- Wildlife gardens focused on supporting pollinators
- Mountain-style or high-altitude themed gardens
- Areas that stay consistently moist but aren’t soggy
Growing Conditions and Care
This mountain native has some specific preferences, but they’re not too demanding once you understand what it wants:
- Moisture: Prefers consistently moist soil – think facultative wetland conditions
- Soil: Well-draining but moisture-retentive soil enriched with organic matter
- Sun exposure: Partial shade to full sun, with some protection during hot afternoons in lower elevations
- Hardiness: Suitable for USDA zones 3-7, perfect for mountain and northern climates
- Elevation: Thrives at higher elevations where it naturally occurs
Planting and Care Tips
Getting Rocky Mountain hemlockparsley established in your garden requires a bit of attention to detail:
- Plant in spring after the last frost when soil is workable
- Choose a location that stays consistently moist but doesn’t flood
- Amend heavy clay soils with compost to improve drainage while retaining moisture
- Mulch around plants to help retain soil moisture
- Water regularly during the first growing season to establish deep roots
- Once established, it should be relatively drought-tolerant but performs best with consistent moisture
Is This Plant Right for You?
Rocky Mountain hemlockparsley is an excellent choice if you:
- Garden in the western United States, particularly in its native range
- Want to support native pollinators and wildlife
- Have a consistently moist area that needs an attractive native plant
- Enjoy delicate, naturalistic garden aesthetics
- Garden at higher elevations where this plant naturally thrives
However, you might want to consider other options if you’re looking for a showy centerpiece plant or if you garden in very dry, desert-like conditions where maintaining consistent moisture would be challenging.
The Bottom Line
Rocky Mountain hemlockparsley may not be the flashiest native plant on the block, but it’s a solid, reliable choice for western gardeners who want to support local ecosystems while adding gentle beauty to their landscapes. Its pollinator benefits, native status, and adaptability to both wet and moderately dry conditions make it a valuable addition to any native plant collection. Just remember to give it the consistent moisture it craves, and it’ll reward you with delicate flowers and the satisfaction of knowing you’re supporting your local ecosystem!