Lavandula angustifolia 'Potpourri Sky Blue'

Common name: English lavender
Type:
Herbaceous perennial
USDA hardiness zones:
5-8

ëPotpourri Sky Blue is compact English lavender cultivar that features deep lavender blue flowers in terminal spikes in late spring/early summer with continued (sometimes intermittent) bloom occurring throughout summer. This is a semi-woody cultivar that typically grows to 10-13î tall. Square stems are clad with narrow, gray-green leaves (to 2 1/2î long). Both foliage and flowers are highly aromatic. In trials, this cultivar has produced blooms early and throughout summer with plants maintaining good appearance. English lavender plants (see Lavandula angustifolia at B413 herein) have been m... more »

  • Full sun
  • Dry to medium
  • Medium

Grow in average, dry to medium, well-drained, alkaline soil in full sun. English lavender can be difficult to grow in the St. Louis area, primarily because of winter stresses and high summer humidity. Well-drained soils are required, particularly in winter. Root rot commonly attacks plants grown in poorly drained soils. Plants generally prefer a light, sandy soil with somewhat low fertility. Remove faded flowers to promote continued bloom. Prune to shape in spring after new leaves appear. Prune back to 8î in spring every 3 years to control plant size and to promote robust, new growth. High summer humidity in the St. Louis area is not appreciated. To combat high humidity, consider using rock instead of organic mulch. English lavender has slightly better winter hardiness than lavandin for the St. Louis area, but still may appreciate a sheltered location and winter protection.

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