Ageratum
Ageratum adds soft, cloud-like color to garden beds and containers. This annual flower is known for its clusters of fluffy blooms in shades of blue, lavender, pink, or white. Compact and easy to grow, Ageratum thrives in full to partial sun and prefers well-drained soil kept evenly moist. It’s a favorite for edging borders, brightening pollinator gardens, and pairing with other summer annuals.
The long-lasting flowers attract butterflies and provide continuous color from spring through frost. Ageratum’s dense habit and consistent bloom make it a reliable choice for low-maintenance landscapes or colorful patio displays.
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Items For Added Success
Plant Height: 8 in.
Spread: 6 in.
Evergreen: No
Plant Form: Mounding
Minimum Sunlight: Partial Sun
Maximum Sunlight: Full Sun
Heat tolerant with excellent garden texture. Produces small tufted flowers in spring and summer.
Tidy mounded habits make this plant an excellent choice for flowerbed borders or container accents.
How to Care for Ageratum
Ageratum grows best in full sun to partial shade. It thrives with 4–6 hours of sunlight daily but benefits from light shade in very hot climates to prevent stress.
Plant Ageratum in fertile, well-draining soil enriched with organic matter. A slightly acidic to neutral pH between 6.0 and 7.0 supports healthy growth.
Keep the soil consistently moist but not waterlogged. Water regularly so the soil stays evenly moist, allowing the top inch to dry slightly between waterings.
Feed Ageratum every 4–6 weeks during the growing season with a balanced, slow-release fertilizer or a diluted liquid fertilizer. Avoid over-fertilizing, which can reduce blooms.
Deadhead spent flowers to encourage continuous blooming and pinch back leggy stems to maintain a compact, bushy shape.
Ageratum may attract aphids, spider mites, or whiteflies. Overwatering or overcrowding can lead to leaf spot, botrytis, or root rot. Monitor plants closely to prevent issues.
Ageratum is frost-sensitive and usually grown as an annual. In USDA zones 10–11, it may survive as a perennial. Protect plants from frost or grow them in containers that can be brought indoors.