Garden Phlox
Isabellina Phlox is a charming heirloom annual that brings soft, delicate blooms to summer and fall gardens. This cultivar of Phlox drummondii reaches a modest 18 inches tall and produces flowers for 70 to 84 days from seed to bloom, rewarding patient gardeners with continuous color from June through November. Its drought tolerance and pollinator-attracting flowers make it a low-maintenance choice for sunny spots, while its compact habit suits containers, borders, and cottage gardens alike.
Full Sun
Moderate
2-11
18in H x 10in W
Perennial
High
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Isabellina Phlox delivers months of continuous blooms on a tidy, compact plant that thrives in full sun with only moderate water once established. The heirloom lineage means this variety has been passed down and refined through generations of gardeners, each one selecting seeds from the most beautiful plants. Its combination of drought tolerance, pollinator appeal, and long bloom window from summer into late fall makes it a garden workhorse that asks little and gives abundantly.
Isabellina Phlox is grown primarily for its ornamental flowers, which grace cutting gardens, borders, and containers throughout the summer and fall months. The blooms attract pollinators, making it valuable for gardeners supporting bees and butterflies, and its long season of color extends garden interest well into autumn.
Sow seeds indoors 6 to 8 weeks before your last frost date. Plant seeds at a depth of 1/8 inch and cover lightly with vermiculite to maintain humidity during germination. Keep soil temperature between 55 and 65°F. Seedlings typically emerge within 7 to 30 days.
Transplant seedlings outdoors after the last frost date has passed, spacing them 10 inches apart in a location with full sun and good air circulation.
Direct sow seeds in early spring once soil can be worked, or make a second sowing six weeks later for extended bloom. In mild winter areas (zones 8 to 10), fall sowing is also an option.
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