Mongolian Snowflakes
Clematis hexapetala
Mongolian Snowflakes (Clematis hexapetala) is a perennial suited to the Colorado Front Range. It matures to about 18–24 in tall and 18–24 in wide, needs low to medium water, and prefers full sun to partial shade. Non-vining bush clematis; clouds of fragrant white star flowers in early summer.
Plant Select®low to medium water18–24 in tall and 18–24 in wideXeric / water-wiseDeer-resistantToxic to dogs
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At a glance
- Botanical name
- Clematis hexapetala
- Type
- Perennial
- Mature size
- 18–24 in tall and 18–24 in wide
- Planting spacing
- ~17–24 in apart
- Bloom length
- 2–3 weeks
- Hardiness zones
- USDA 4–9
- Water needs
- low to medium water
- Sun
- Best in full sun; tolerates partial shade.
- Colorado native
- No
- Foliage
- Deciduous
- Soil
- loam, sandy
- Soil pH
- 6.5–8.0
- Hail tolerance
- high
- Wind tolerance
- high
- Salt tolerance
- moderate
- Bloom color
- white
- Bloom time
- early summer, mid summer
- Pollinator value
- moderate
Things to know before you plant
- Toxic to dogsConsidered toxic to dogs, so keep pets away from it and check with your vet.
Wildlife & ecology
- Pollinator value
- moderate
- Deer
- Generally deer-resistant
Planting & establishment
Deep water every 1–2 weeks during establishment (first growing season), then water sparingly per Plant Select guidance.
Frequently asked questions
- Is Mongolian Snowflakes good for the Colorado Front Range?
- Yes, Mongolian Snowflakes is a well-suited perennial for Colorado's Front Range.
- What should I know before planting Mongolian Snowflakes?
- The main things to know: Considered toxic to dogs, so keep pets away from it and check with your vet.
- How big does Mongolian Snowflakes get?
- It matures to about 18–24 in tall and 18–24 in wide.
- How far apart do I plant Mongolian Snowflakes?
- Space Mongolian Snowflakes about 17 in apart for a faster, fuller bed, or up to 24 in apart for a looser planting.
- Is Mongolian Snowflakes hardy on the Front Range?
- Mongolian Snowflakes is hardy in USDA 4–9. The Colorado Front Range spans roughly USDA 4b–6a, so it is well within range.
- How much water does Mongolian Snowflakes need?
- It needs low to medium water once established.
- Is Mongolian Snowflakes safe for dogs?
- No. Mongolian Snowflakes is considered toxic to dogs. Keep pets away and check with your vet.
- Is Mongolian Snowflakes deer-resistant?
- Mongolian Snowflakes is generally considered deer-resistant, though no plant is deer-proof when browse pressure is high.
- How long does Mongolian Snowflakes bloom?
- Mongolian Snowflakes blooms for about two to three weeks on the Front Range. Bloom timing shifts a week or two with elevation and spring weather.
