True forget-me-not is a delicate perennial that brings the magic of water gardens to life, with tiny sky-blue flowers crowned by golden centers blooming from June through August. This rhizomatous aquatic thrives in zones 5 through 9, growing 6 to 12 inches tall and spreading gently across wet soils, stream banks, and pond margins. Hardy to frost and beloved by butterflies, it transforms marginal water spaces into shimmering blue landscapes while asking very little in return.
Partial Sun
Moderate
5-9
12in H x 12in W
—
Low
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The flowers emerge in coiled scorpioid cymes that gradually unfurl like a scorpion's tail, a botanical detail that gave the species its scientific name. It grows readily in standing water up to 3 inches deep, making it one of the few flowers that genuinely thrives at the water's edge where most plants struggle. Low maintenance and free-seeding, it spreads gently by creeping rhizomes without becoming invasive, and attracts butterflies throughout its long bloom season.
True forget-me-not excels as a naturalized planting for rain gardens and water features, where it stabilizes wet margins and softens the hard edges of ponds and streams. Its ability to thrive in consistently moist to wet soils makes it invaluable for creating naturalized waterside drifts, and it performs beautifully in container water gardens where its spread can be gently controlled.
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Start seeds indoors at temperatures between 55 and 70 degrees Fahrenheit for transplanting into established water gardens or wet spaces. Time indoor sowing 6 to 8 weeks before your last spring frost to have robust seedlings ready for placement.
Transplant hardened-off seedlings directly into moist to wet soils at the water line or into containers submerged in water gardens after the last frost date. Space plants 9 to 12 inches apart to allow room for their spreading habit.
True forget-me-not can be direct-sown into consistently moist soils or muddy banks at the water's edge, where seeds will naturally germinate in cool, damp conditions.
Pinch young plants to promote bushier, fuller growth before flowering begins. This simple step encourages a more compact habit and increases flower production. Beyond this initial training, true forget-me-not needs no formal pruning; simply allow it to spread naturally via its creeping rhizomes or deadhead spent flower cymes if you prefer to prevent excessive self-seeding.
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