How to Grow Garland Chrysanthemum
Glebionis coronaria
Garland Chrysanthemum is a cheerful warm-season annual prized for its vibrant yellow blooms that attract pollinators. Gardeners grow this easy-to-care-for herb in gardens or containers to add bright color during the summer months when other flowers may fade.
📷 Wikimedia CommonsStarting Garland Chrysanthemum: indoors or direct sow?
🌾 Sow directly in the garden — Garland Chrysanthemum is not usually started indoors.
Direct sow seeds outdoors after the last frost date; do not start indoors or transplant seedlings.
Soil, care & harvest
Prepare your soil with consistent moisture and adjust pH between 6.0 and 7.0 for optimal growth. Since this is a warm-season crop, sow seeds directly outdoors after the last frost date once temperatures have warmed up. Press seeds lightly into the soil at a depth of about half an inch. Expect germination to occur within 7 to 14 days under these warm conditions.
Space plants 4 to 6 inches apart to ensure good air circulation and healthy growth. While this species does not require trellising, provide consistent moisture by watering approximately one inch per week. Apply a light layer of mulch around the base to retain soil moisture and suppress weeds, but avoid smothering the stems.
Watch for aphids, flea beetles, and leaf miners; spray with insecticidal soap or water if infestations appear. Prevent damping off and downy mildew by ensuring good airflow and avoiding wet foliage in cool weather. Harvest flowers when fully open, typically within 30 to 50 days after sowing, by pinching the blooms from the stem.
When to Plant Garland Chrysanthemum
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 2 | April – May | — | August – September |
| Zone 3 | April – May | — | July – October |
| Zone 4 | March – April | — | July – October |
| Zone 5 | March – April | — | June – October |
| Zone 6 | March – April | — | June – November |
| Zone 7 | February – March | — | June – November |
| Zone 8 | February – March | — | May – December |
| Zone 9 | January – February | — | April – December |
| Zone 10 | January | — | April – December |
| Zone 11 | January | — | March – December |
Companion Plants for Garland Chrysanthemum
✓ Good companions
Chrysanthemum helps deter flea beetles and cabbage moths from brassica crops
Chrysanthemum repels cabbage worms and other brassica pests
Chrysanthemum's pest-repelling compounds help protect carrots from root flies
Benefits from chrysanthemum's natural pest-repelling properties, especially against aphids
Both plants contain natural pyrethrin compounds that enhance overall garden pest control
Benefits from chrysanthemum's ability to repel root maggots and other soil pests
Protected from leaf miners and aphids by chrysanthemum's natural insecticidal properties
Chrysanthemum deters whiteflies and aphids that commonly attack tomatoes
✗ Keep away from
Produces juglone which inhibits chrysanthemum growth and can cause wilting
Allelopathic compounds inhibit growth and development of chrysanthemum
Compete heavily for nutrients and water, can overshadow and stunt chrysanthemum growth
Nutrition Facts
Per 100g serving (USDA FoodData Central)
