Grandiflora Starry Eyes Blend Phlox is a frost-tender annual that brings a constellation of color to summer gardens across zones 2-11. This cultivar of Phlox drummondii reaches 18-20 inches tall and produces generous clusters of flowers when given full sun to partial shade and moderate water. Sow seeds 2 to 4 weeks before your last frost date, or start them indoors 6 to 8 weeks earlier in biodegradable pots, since these roots are sensitive to disturbance. The blend name hints at its star-pattern flowers, which create a shimmering effect across beds and borders.
Partial Sun
Moderate
2-11
20in H x ?in W
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Moderate
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These phlox are frost-tender annuals that thrive in warm-season gardens and prefer full sun to partial shade with consistently moderate moisture. The roots are notably sensitive to disturbance, making biodegradable pots the smart choice for indoor seed starting. You can direct sow outdoors or start seeds indoors, giving you flexibility depending on your climate and schedule. At 18-20 inches tall, they fill the middle or back layer of beds without overwhelming smaller companions.
These phlox are grown as ornamental flowers for beds, borders, and garden displays where their clustered blooms create visual impact from midsummer through frost.
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Start seeds indoors 6 to 8 weeks before your average last frost date. Sow in biodegradable pots since roots are sensitive to disturbance. Keep soil at 50-60°F for ideal germination. Sow seeds at a depth of 1/8 inch.
Transplant outdoors after your last frost date when soil has warmed and nighttime temperatures stay consistently above freezing. Harden off seedlings gradually before moving them to full sun.
Direct sow outside 2 to 4 weeks before your average last frost date. In mild climates, fall sowing is recommended. Keep soil temperature between 50-60°F for germination.
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