Mask Flower (Alonsoa incisifolia) is a charming heirloom annual that brings warm-season color to gardens from June through November. Growing 24 to 30 inches tall with delicate, deeply lobed foliage, this flower reaches full bloom roughly 84 days from seed. It thrives in full sun across USDA zone 9 and attracts pollinators while resisting deer, making it a low-maintenance addition to mixed borders or cottage gardens. With moderate water needs and a generous blooming window, Mask Flower delivers months of continuous interest without fussy deadheading.
1
Full Sun
Moderate
9-9
30in H x 18in W
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High
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Named for the distinctive shape of its blooms, Mask Flower flowers continuously from early summer into late autumn, a testament to its reliable performance in warm climates. The delicate, intricately cut foliage provides an airy texture that contrasts beautifully with its prolific flowers, and its ability to attract pollinators while shrugging off deer pressure makes it both ecologically valuable and garden-practical. At 24 to 30 inches tall and relatively narrow (12 to 18 inches wide), it tucks neatly into borders or containers without demanding prime real estate.
Mask Flower is grown as an ornamental annual, valued for its prolonged summer-to-fall blooms in flower beds, mixed borders, and cottage garden settings. Its compact to moderate height and airy foliage texture make it equally at home in containers where it can be positioned at eye level to showcase the intricately marked flowers.
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Sow indoors 6 to 8 weeks before your last frost date, maintaining soil temperature around 68°F. Sprinkle seeds on the surface or press them into soil to a depth of no more than 1/16 inch, then cover lightly with vermiculite to preserve moisture. Expect germination in 14 to 21 days. Keep seedlings under bright light once they emerge.
Harden off seedlings gradually over 7 to 10 days by exposing them to outdoor conditions in increasing increments. Transplant after your last frost date, spacing plants 1 inch apart in well-draining soil under full sun. Handle seedlings gently as they establish.
Direct sow after the last frost date by scattering seed on prepared soil and pressing gently into place. Keep the seedbed consistently moist until germination occurs in 14 to 21 days.
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