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Luxe Prestige Chronicle

alyssum plant

Author

Sarah Scott

Updated on June 15, 2026

Sweet alyssum, Lobularia maritima, is a common annual flower plant. Lobularia maritima is a mat-forming annual or short-lived perennial native to the Mediterranean, Canary Islands and Azores, where it grows along the coast in rocky, sunny areas.

Where does alyssum grow best?

Exposure: Sweet alyssum flowers best with at least six hours of full sun, but can tolerate partial shade. In warmer climates, plants perform best with protection from hot afternoon sun.

Is alyssum a perennial Australia?

Alyssums are compact annual and perennial flowering plants that cover themselves in colourful blossom. The plant grows and flowers from spring through to autumn.

Is alyssum a good companion plant?

Sweet alyssum makes a great companion plant for any aphid-prone crop, including roses, fruit trees, and others. Pests have an easier time locating host plants when there are a large number of them planted closely together.

How do you keep alyssum blooming all summer?

Keep alyssum well-watered during hot, dry weather. It has few pests and diseases. In mid summer to stimulate more growth and flowering shear your alyssum plants by 1/3rd of their height. Fertilize afterward with a balanced product and water and they will regrow for a late summer flower show.

How much does alyssum spread?

Landscaping Uses for Sweet Alyssum

The plants typically stand just 4 to 6 inches high, with a spread of 6 to 9 inches. They are popular in containers and can be installed along the rim, overhanging the edge slightly. Their short stature also makes them useful as temporary rock garden plants or ground covers.

Does alyssum bloom all summer?

It is a fast-growing plant that blooms white, pink, red, violet, yellow, and lilac flower clusters and has narrow green leaves. Sweet alyssum grows best in cooler temperatures, so it will bloom in the spring, fade in the summer, and re-bloom again in the fall.

What goes well with alyssum?

Geraniums and pansies come to mind as nice companion plants for alyssum that look lovely side by side.

How long does it take alyssum to grow?

They may not look like much as seedlings, but sweet alyssum plants can really spread. They take about nine to 10 weeks to flower from the time you sow the seeds.

Do bees like alyssum?

Sweet Alyssum

Cluster flowers ensure a large amount of nectar for bees. Additionally, sweet alyssum has a strong, sweet scent, which can attract bees from large distances. These plants can grow and bloom all year long, which maintains its benefit for bees throughout the year.

Can alyssum grow in pots?

The need for good air circulation makes sweet alyssum perfect for growing in hanging baskets and large, upright containers. It doesn’t love being crowded in a garden bed with other plants. Wind dries out plants growing in containers fairly quickly, so check your plants often to make sure they aren’t drying out.

What does alyssum symbolize?

Alyssum means “worth beyond beauty” or “sweetness of soul” in the Victorian language of flowers. It is also a plant with a role to play in witchcraft. Dedicated practitioners claim alyssum will help deflect unfriendly spells. Alyssum can also help the wearer cultivate calmness and avoid anger.

Does alyssum need a lot of water?

Provide your sweet alyssum plants with at least an inch of water every week, watering them more frequently during hot weather days or dry spells. The water should drain well.

Is alyssum a trailing plant?

In fact, sweet alyssum’s trailing, creeping habit makes it perfect for growing in a container, hanging basket, or window box. Want to learn how to grow alyssum in a pot?

How cold hardy is alyssum?

Alyssums are hardy to USDA zones 5 through 9 and handle cold temperatures down to 20 degrees Fahrenheit. Alyssum prefers cooler conditions and generally doesn’t do well starting at 85 degrees. There are frost-resistant varieties that tolerate cold, and some that take hot weather.

Does alyssum need to be pinched?

Alyssum is one of the few flowers that benefits greatly from pinching to force branching. With the pictures you have seen that show a thicker carpet that is what was done – pinching. Keeps the plant short and multiple branches form.

Is alyssum poisonous to dogs?

Alternative: Like the castor bean plant, alyssum is also a fast-growing, feathery perennial that is non-toxic for dogs and cats, according to the ASPCA.

Can alyssum survive winter?

Alyssum seedlings can tolerate light frost, but plants are often killed by freezing temperatures.