20 Annuals That Reseed Themselves to Color Your Garden Year After Year

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One of the easiest ways to keep your garden full of life and color without a lot of effort is by growing self-seeding annuals. These plants take care of the hard work for you, dropping their seeds and sprouting again year after year. While perennials add structure to a garden, annuals bring bold, eye-catching color, and luckily, many of them will happily return if you let them go to seed.

The beauty of self-seeding plants is that they do their thing with almost no help from you. Just resist the urge to pull them up too soon—nature will intervene once their seed pods dry out and release their seeds. Before you know it, they’ll pop back up, filling your garden with vibrant blooms season after season.

If you’re tired of replanting annuals every year, these 20 self-seeding flowers will bring effortless color and charm to your garden—year after year!

China Aster

China asters grow quickly and put on a long-lasting display of blooms from late spring well into fall. While they’re most often seen in shades of purple or blue, some varieties also produce pink or white flowers.

Once the seedlings emerge, adding a layer of mulch helps shield their shallow roots. These flowers thrive in consistently moist soil, making partial shade an ideal spot to keep them from drying out too quickly.

Cleome

Cleome, also known as the spider flower, is a dependable self-seeder that brings a touch of wild elegance to any garden. Once established, it readily drops seeds, ensuring new blooms return year after year with little effort on your part.

Growing cleome from seed is incredibly easy, and its distinctive seedlings are easy to spot, making it simple to manage where they grow.

Celosia

Celosia’s bold, spiky blooms bring vibrant color and texture to the garden, thriving in full sun and warm temperatures. This adaptable plant requires little maintenance and readily reseeds itself, often returning year after year without extra effort.

Plant it in the spring, and it will bloom steadily until the first frost, with self-sown seeds ensuring a fresh display the following season.

Strawflower

Strawflowers readily self-seed, especially in mild climates, making them a reliable addition to the garden year after year. They thrive in dry conditions and well-drained soil, requiring little upkeep.

To manage reseeding, regular deadheading or cutting flowers for arrangements can help control their spread. With their long-lasting blooms and pleasant fragrance, strawflowers are just as stunning in the garden as they are in a vase.

Alyssum

Sweet alyssum is a cute ground cover that easily reseeds, often returning year after year in the right conditions. While typically grown as an annual, it thrives in a variety of climates, continuously blooming from spring until the first frost.

To encourage self-seeding and prolonged flowering, plant it where it gets some afternoon shade, helping it withstand the heat of summer while ensuring a steady display of delicate blooms.

Morning Glory

Morning Glory is loved for its striking, trumpet-shaped blooms that open with the morning sun and close by afternoon. This fast-growing vine thrives in full sun, spreading quickly over trellises, fences, and arbors with its lush foliage and vivid flowers.

Though often grown as an annual, Morning Glory readily self-seeds, making it a reliable garden presence year after year. In warmer climates, it can even behave like a perennial, returning each season with little effort.

Calendula

Calendulas brighten the garden and offer more than just good looks. Their petals and leaves are edible, adding a mild, peppery flavor to salads or serving as a natural garnish. Beyond their beauty, calendulas serve a practical purpose by repelling pests, deer, and rabbits, making them a natural ally for vegetable gardens.

One of calendula’s handy traits is its ability to self-seed, often popping up in unexpected places. While it can spread beyond the garden, it doesn’t aggressively take over or threaten native plants, so it isn’t considered invasive.

These hardy flowers thrive in well-drained soil and flourish best with gentle sunlight. Plant them in early spring, and they’ll reward you with bright blooms from late spring through early summer.

Cosmos

Cosmos are a favorite among pollinators, attracting butterflies with their nectar-rich blooms. These easy-care flowers thrive in full sun and need consistent moisture until they’re well established.

Once mature, they become drought-tolerant and require little upkeep. Known for their ability to self-seed, cosmos often return year after year, effortlessly filling the garden with their delicate, daisy-like flowers.

California Poppy

California Poppies bring big, bold, gorgeous colors to the landscape, and most types self-seed freely and reliably. These cheerful flowers make great cut flowers and are naturally deer-resistant and drought-tolerant. For the best results, plant your poppies in full sun and fertile, well-drained soil.

Coreopsis

Coreopsis is a standout in the garden, lighting up the landscape with its cheerful, daisy-like blooms from summer through winter in milder climates. These hardy plants thrive in full sun and are a favorite among bees and butterflies, making them a great choice for pollinator-friendly spaces.

To keep coreopsis blooming profusely, regular deadheading helps extend the flowering season. However, if you’d like them to self-seed for the next year, leave some spent flowers on the plant to dry.

Petunia

Petunias are fast-growing, low-maintenance sun lovers that thrive in garden beds and containers. Hybrid varieties will not always breed true, so it’s difficult to say what your new flowers will look like.

With so many beautiful varieties available, there is a petunia for every garden. Petunias like fertile soil and a moderate amount of water. They bloom best in mild weather.

False Forget-Me-Not (Brunnera macrophylla)

With its dense clumps of heart-shaped leaves, false forget-me-not creates an attractive textured backdrop throughout the year. In the spring, this low-maintenance perennial puts on a showy display of bright blue flowers that resemble true forget-me-nots, hence the name.

Bachelor’s Button

Bachelor’s button plants self-seed very well. Bachelor’s buttons are hardy little plants that can grow in a wide range of climates and soil types. They are drought tolerant, and while blue is the most common color, it is far from exclusive.

These flowers come in many shades of purple, pink, and white. They require little to no maintenance, and pollinators appreciate their presence, as well.

Impatiens

Impatiens are attractive flowering plants that prefer partial shade and will self-seed if their seed pods are left on the plant. These are mounding plants, and they are not aggressive about self-seeding. Impatiens look stunning in a mass planting. They need rich, moist soil, and in exchange.

Viola

Violas are cool-weather flowering plants with edible flowers and surprisingly good frost tolerance. They self-seed readily. Although they can continue to bloom in hot climates if given enough shade, they much prefer cooler temperatures. Plant your violas in containers or the ground in rich, loamy, moist soil that is slightly acidic.

Love-in-a-Mist (Nigella Damascene)

The whimsical name of Love-in-a-Mist is perfectly matched by its delicate blue flowers and fine foliage. Blooming in late spring and early summer, this plant is a low-maintenance choice that adds a soft texture to the garden. It thrives in full sun or partial shade and is best sown directly outdoors in early spring.

Sunflower

This summer beauty is known for its beautiful yellow flowers that attract insects. It is edible to both animals and humans when prepared in a delicious manner. It is self-seeding and if you can manage to keep critters and other birds at bay, especially during winter, you might get some sunflowers in spring. 

Amaranth

Amaranth is commonly grown as a food source, but it also has wonderful ornamental varieties. The young leaves are edible, and the flowers have a fuzzy texture. If left on the plant to dry, the flowers will go to seed and self-seed well.

Larkspur

Rocket Larkspur, also known as Wild Delphinium, brings color to the garden with its tall spikes of blue, white, pink, and purple blooms. Its striking vertical growth creates a stately presence in garden beds, making it a standout choice for ornamental borders and cottage-style landscapes.

Thriving in full sun or partial shade, Rocket Larkspur grows best in cool seasons and often reseeds itself when planted in late winter or early spring. Its delicate, fern-like foliage adds softness to its bold floral display, providing a beautiful contrast in mixed plantings year after year.

Borage

Borage is another self-seeding plant with edible flowers. The bright blue flowers are also a favorite for bees, making them an excellent pollinator garden addition. This plant isn’t picky about soil and rarely needs fertilizer, but prefers full sun to partial shade.

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