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White Campanula (Campanula carpatica) is a cool-hardy perennial flower that forms compact, durable mounds of pure alpine white blooms, reaching just 8 to 10 inches tall. This non-GMO hybrid from the Clips Series thrives in full sun and grows as a second-year perennial, though many gardeners treat it as an annual for consistent, reliable flowering. It flowers around 100 to 109 days from seed and adapts beautifully across temperate North American climates, making it equally at home in rock gardens, hanging baskets, or as edging along borders.
Full Sun
Moderate
3-8
10in H x ?in W
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High
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This campanula produces tidy, mounding plants that stay naturally compact without fussy deadheading or aggressive pruning. The pure white flowers appear reliably in year two and the variety's low, spreading habit makes it especially valuable for small spaces, alpine troughs, and container gardening where height flexibility matters. Its cool-hardiness and wide climate adaptability mean it performs well across diverse growing regions without coddling.
White Campanula shines as ornamental planted en masse for alpine garden effects, in hanging baskets and window boxes where its trailing mounds soften edges, and as border edging along pathways and beds. The delicate white bells also work well in rock gardens, scree beds, and container combinations where its restrained height complements taller perennials.
No timeline data available yet for this variety.
Start seeds indoors 6 to 8 weeks before your last spring frost. Sow seeds on the surface of moist seed-starting mix without covering, as they need light to germinate. Keep soil temperature around 65 to 70 degrees Fahrenheit and maintain consistent moisture until seedlings emerge in 7 to 14 days. Thin crowded seedlings to prevent damping off.
Harden off seedlings over 7 to 10 days by gradually exposing them to outdoor conditions. Transplant after the last frost date when soil has warmed and plants have developed at least two true leaf sets. Space plants 12 inches apart in full sun.
Deadhead spent flowers regularly to extend the blooming season and maintain a tidy, mounded appearance. The naturally compact bush habit requires minimal structural pruning; simply remove any dead or damaged growth as needed.
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“The Clips Series represents modern breeding work in Campanula carpatica, a species native to the Carpathian Mountains. This particular cultivar was developed to bring reliable, compact white flowering to gardeners seeking alpine character without the fussiness of temperamental mountain plants. By selecting for second-year vigor and mounding form, breeders created a hybrid that bridges the gap between annual bedding and permanent perennial borders.”