Sweet Alyssum Plaint Guidance
Did you Know
Sweet Alyssum (Lobularia maritima) is one of the most reliable and rewarding annuals for a Connecticut garden. Its honey-like fragrance and carpet-like growth make it a staple for borders, hanging baskets, and rock gardens.
In New England, it is particularly valued for its “toughness”—it is one of the first plants you can safely put out in the spring and one of the last to succumb to the autumn frost.
Quick Care Stats
• Light: Full sun to partial shade (4–6+ hours).
• Water: Needs regular watering; do not let the soil dry out completely.
• Soil: Well-drained, average garden soil.
• Growth Habit: Low-growing (3–9 inches tall) and spreading (12–24 inches wide).
CT Growth & Planting Guide
Timing for the Northeast
Sweet Alyssum is a “cool-season” annual. In Connecticut, you can transplant it into the garden in late April or early May. It can handle a light frost (down to approximately 28°F), so it’s a perfect partner for pansies and snapdragons while you wait for the warmer June weather.
Pollinator Benefits
One of the best reasons to plant Alyssum in a CT landscape is its ability to attract beneficial insects. Its tiny flowers are a magnet for hoverflies, lacewings, and parasitic wasps—all of which are “good bugs” that eat aphids and other garden pests. Many local vegetable gardeners plant Alyssum at the base of their tomato plants for this very reason.
The “Summer Haircut”
In the peak heat of July and August, Alyssum can sometimes look “leggy” or stop blooming. To keep it looking fresh:
- Take a pair of garden shears and shear the plant back by about half.
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Provide a quick boost of water-soluble fertilizer.
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Within 10–14 days, the plant will flush out with fresh green growth and a heavy new round of blooms that will last until the first hard freeze in November.
Self-Seeding
While technically an annual in our Zone 6/7 climate, Sweet Alyssum is a prolific self-seeder. If you don’t mulch too heavily in the spring, you will often find “volunteer” Alyssum popping up in the same spots year after year.
Top Varieties for CT Gardens
• ‘Snow Crystals’: Known for having larger, crisp white flowers and excellent heat tolerance.
• ‘Easter Bonnet’ Series: Compact plants that come in beautiful shades of violet, rose, and deep purple.
• ‘Blushing Princess’: A modern hybrid that is incredibly vigorous and smells strongly of honey; it’s a “spiller” that looks fantastic trailing over the edge of a stone wall.
Plant Guidance by Larson’s Garden Center and Landscaping
Note: Always check with your weather channel on upcoming temps and conditions
March 2026
