Species Haller's pasque flower
purple flower with purple stigma, yellow stamens light-green sepals and white hairs

Haller's pasque flower

Pulsatilla halleri

Haller's pasque flower (Pulsatilla haller) is a species of wildflower native to the alpine meadows of the Swiss Alps. It grows to be between 10-15 cm in height and has a striking deep blue-purple coloring on its petals and a yellow center. The flower blooms from late May to June and is pollinated by insects like butterflies and bees. This plant is an important part of its alpine ecosystem, since bees rely on it as a source of nectar. Additionally, it is highly sought after since it is rare, with limited access due to its difficult terrain and inaccessible location atop mountains.

Cycle:

Herbaceous Perennial

Watering:

Average

Propagation:

Seed Propagation,Division,Cutting,Layering Propagation

Hardiness Zone:

5 - 7

Flowers:

Violet blue Flowers

Sun:

Full sun,part shade

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Maintenance:

Low

Drought Tolerant:

Yes

Care Level:

Medium

watering

Haller's pasque flower (Pulsatilla halleri) should be given deep waterings every 10 to 14 days, thoroughly soaking the soil but allowing the top inch of soil to dry out between waterings. During the warmer months, the flower may need more frequent waterings due to the higher temperatures. In the cooler months, the flower won't need to be watered as often. During severe drought conditions, supplemental irrigation may need to be provided to ensure the plant has enough water.

sunlight

Haller's pasque flower (Pulsatilla halleri) grows best when exposed to 6-7 hours of sunlight per day. Full sunlight is most beneficial but some afternoon shade is appreciated during the hottest months of the year. Light levels can vary during the course of the day depending on the season, but it is important to ensure that the plant is exposed to a balance of light intensity throughout the day. During the winter months, many days may not offer sufficient light, so a grow light may be needed depending on the location.

pruning

Haller's pasque flower (Pulsatilla halleri) is best pruned in late spring after the plant has bloomed and is beginning to look tired and woody. Pruning should only be performed when necessary, such as deadheading spent blooms or trimming off old foliage. Pruning should only involve removing dead or unhealthy shoots and plants should only be thinned if they overcrowd the space. When necessary, prune just enough to promote air circulation and remove any dead or damaged parts. When deadheading blooms, make sure to remove the entire stem all the way to the main stem, and do not leave any broken stems or foliage. To ensure healthy regrowth, prune Haller's pasque flower just above an outward-facing bud.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Haller's pasque flower typically starts flowering in April.

Hardiness Map