Purple Robe Cupflower is a delicate yet sturdy ornamental flower that brings continuous color from spring through fall across hardiness zones 7 and beyond. This heirloom cultivar of Nierembergia hippomanica grows just 10-12 inches tall with a compact 8-10 inch spread, earning its place in borders, containers, and rock gardens where its purple blooms create an elegant display. Starting from seed to first bloom takes about 98 days, rewarding patient gardeners with months of continuous flowering when started indoors 6-8 weeks before the last frost.
10
Full Sun
Moderate
7-7
12in H x 10in W
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Moderate
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Purple Robe Cupflower delivers an extended blooming season that stretches from March through November in favorable conditions, making it one of the longer-flowering ornamentals for its size class. Deer leave it untouched and pollinators seek it out, creating a living bridge between your garden and the wider ecosystem. The low, mounding habit works equally well cascading from containers or anchoring the front of a perennial border without requiring deadheading or fussy maintenance.
Purple Robe Cupflower serves as a front-of-border accent, container plant, and pollinator garden staple. Its compact, mounding growth habit makes it particularly suited to edging pathways, filling in around taller perennials, or creating continuous color in mixed planters throughout the growing season.
No timeline data available yet for this variety.
Start seeds indoors 6-8 weeks before your last spring frost. Sow seeds in pots and keep them at 70-75°F. Just cover the seeds with soil; they need minimal light to germinate. Expect sprouts in 7-14 days.
Transplant seedlings outdoors after the last frost date has passed and soil has warmed. Space plants 10 inches apart in full sun locations.
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