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An excellent performer, award-winner Coreopsis verticillata 'Zagreb' (Threadleaf Coreopsis) is a compact perennial forming a gorgeous mound of finely divided leaves. Blooming continuously from early to late summer, it gets covered with a profusion of bright golden-yellow blossoms. The airy clumps of fine, threadlike foliage on upright stems add a lovely delicate texture element to the ...
Mar 7, 2024 · The ideal soil pH for Coreopsis is slightly acidic to neutral (around pH 6.0 to 7.0). If your garden soil is heavy or clayey, consider amending it with organic matter such as compost to improve drainage. A well-draining soil mix is also essential for container-grown Coreopsis.
- Kristine Moore
- Forestry Author
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Venturing into the realm of seed cultivation, I discovered that Coreopsis Zagreb can be directly sown once the soil warms up in spring or started indoors for an early head start. With soil kept moist and warm, the seedlings thrive in the gentle glow of 70°F to 75°F. As the young plants mature, they eagerly await transplantation into the ...
Growing Coreopsis ‘Zagreb’ from seed. You can direct-sow Coreopsis seeds once the soil has warmed up in the spring or get a head start indoors. Sow seeds about six to eight weeks before your frost-free date. Keep the soil moist and warm (about 70°F to 75°F). Once the seedlings grow, give them plenty of light.
Coreopsis can be grown in moist, well-draining soil. It also does well in dry, rocky and sandy soils. Light. Plant in full sun but in areas with intense heat, coreopsis may do better with some afternoon shade. Pruning. Coreopsis must be deadheaded to promote reblooming, but it's well worth the extra effort.
Planting and spacing Coreopsis. Sow seed indoors in six-pack or flats filled with moist, sterile potting soil. Cover plants with 1/8 inch of soil and keep them at 65° to 75°F (18°-24°C) in bright light or under fluorescent light. Seeds will germinate in about 7 days.
Coreopsis verticillata 'Zagreb' bears large, star-shaped, bright yellow flowers on upright, wiry stems, in contrast with dark green filigree leaves. It’s a magnet for bees and other pollinators and makes a good cut flower. Grow Coreopsis verticillata 'Zagreb' in full sun or partial shade in well-drained soil, though it will perform better in ...
