Astrantia maxima

syn. Astrantia helleborifolia

Largest masterwort is best known for its long bloom time. Large, rosy pink flowers bob above the lush foliage from late spring to early fall. Pollinated by beetles but very attractive to bees, butterflies, and other pollinators. Deadheading isn't required but it will keeps the flower show going longer. Self-sows reliably if spent flowers aren't removed.

Fertile soil required. Easy to grow in full sun or partial shade. Plants can take up to five years to reach full size.

Distinctions: Winner of an Award of Garden Merit from the Royal Horticulture Society.

Zones: 5 to 7

Family: Apiaceae

Type: Perennial

Height: 12 to 36 in.

Spread: 12 to 24 in.

Exposure: Full sun, part-shade

Soil Conditions: moist, average

Bloom Time: June to July

Bloom Color: Mostly Pink

Native Range: South Europe, Caucasus

Image Credits:

Image 1 (bloom) Zeynel Cebeci, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

Image 2 (form) Mustafa Orhon, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

Image 3 (foliage) Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons