Pay attention: Cut back these top 12 perennials in June (Page 2 ) | June 28, 2025

8. Delphinium: Prepare for a Second Show

Cut flower stalks back to the base after the first bloom to encourage a smaller second flowering. This practice redirects energy to new growth and improves overall plant health.

9. Phlox: Prevent Mildew and Encourage Blooms

Cut back Phlox by about one-third after the initial bloom to improve air circulation and reduce mildew risk. This also stimulates a second wave of flowering.

10. Veronica: Extend the Flowering Season

After blooming, cut back flower spikes and trim the plant by about one-third. This encourages more blooms and keeps the plant well-shaped and vigorous.

11. Penstemon: Enhance Flower Production

Cut Penstemon back by one-third after the first bloom to stimulate new flower production and manage its size and structure for a healthier, fuller plant.

12. Campanula: Keep the Garden Neat and Blooming

Trim Campanula by about one-third after flowering to promote a second bloom and prevent excessive self-seeding. This maintains both its charm and garden order.

13. Shasta Daisy: Encourage Re-Blooming

Deadhead and trim back Shasta Daisies by about one-third to extend the blooming period. This also prevents seed production and keeps the plant vigorous and neat.

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