10 Easy Annuals To Grow From Seed

Growing annuals from seed is easy to do and it’s much cheaper than buying plants from the nursery or garden center.

Starting your annuals from seed will give you an abundance of plants, which means masses of beautiful blooms in your garden.

There are many different annual flowers that are easy to grow from seed and in this article I’ve listed my top ten easiest annuals to grow from seed.

Many of these plants will re-seed, so you’ll have free plants the next year.

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Petunia annual flowers

10 EASY ANNUAL FLOWERS TO GROW FROM SEED

1. Sweet Alyssum (Lobularia maritima)

Sweet Alyssum seeds germinate very fast, sometimes in as little as four days.

They mature quickly to produce masses of tiny fragrant flowers – perfect for ground covers, pots and rock gardens.

The seeds can be started indoors a month before ​the last frost, or outdoors after the risk frost has passed.

Sprinkle the seeds over the soil and press them down lightly with your finger.

Keep the soil moist until the seeds germinate.

Sweet alyssum annuals

2. Marigold (Tagetes)

Marigolds are popular annuals with beautiful bright yellow and orange flowers.

The seeds germinate in less than a week when planted in warm, moist soil.

Marigold seeds are large and easy to handle, so they’re great for beginner gardeners and kids.

The seeds can be direct sown in the garden after the danger of frost has passed, or started indoors four to six weeks before the last frost of the season.

Marigold flowers

3. Nasturtiums (Tropaeolum majus)

Nasturtiums are easy-to-grow annuals that have beautiful, bright red, orange and yellow edible flowers. The leaves and seeds can also be eaten and taste similar to watercress.

Nasturtium seeds are fairly large and can be planted directly in the garden or in containers or hanging pots after the last frost of the season. They germinate best in warm soil.

In colder areas, or to get an earlier start, you can plant the seeds in containers indoors and transplant them to the garden in spring.

It usually takes about 10 to 14 days for nasturtium seeds to germinate and they begin to bloom in 5 to 7 weeks.

Grow nasturtium

4. Petunia (Petunia × atkinsiana)

Petunias are another popular and easy to grow annual that blooms all summer.

They look great in garden beds, containers and hanging baskets.

Sprinkle petunia seeds in the garden bed in early spring. They can also be started indoors about 10 weeks before planting time.

Petunia flowers

5. Poppy (Papaver somniferum)

Annual poppies don’t like to be transplanted, so it’s best to direct sow them in the garden in early spring.

The seeds need light to germinate, so press the seeds lightly into the soil with your finger.

They can be a bit slow to get started, but once the weather warms up they will shoot up quickly.

Most varieties of poppies will reseed, so you’ll have free plants the next year.

Annual poppies

6. Snapdragon (Antirrhinum Majus)

Snapdragons are beautiful annual flowers that grow 1 to 3 feet high.

The seeds can be started indoors about six to ten weeks before the last frost in spring.

Snapdragon seeds germinate in 10 to 20 days and do best in cool temperatures.

Snapdragon flowers

7. Stock (Matthiola incana)

Stock is an easy to grow annual that grows 2 to 2.5 feet (60 to 75cm) tall and blooms from spring to summer.

Sow the seeds direct in the garden or plant them indoors for transplanting later.

Stock flowers

8. Sunflower (Helianthus)

Sunflowers are easy to grow annuals with large yellow flowers.

The seeds can be planted in spring when the soil is warm and they’ll begin to bloom in about 10 weeks.

Sunflowers

9. Sweet Pea (Lathyrus odoratus)

Sweet peas are beautifully scented annuals that are great for trellises and arches.

The seeds can be sown in late winter or early spring. Soaking the seeds overnight can help them to sprout faster.

Keep Sweet pea plants deadheaded as they will stop flowering once they go to seed.

Sweet pea annuals

10. Zinnia (Zinnia elegans)

Zinnia is one of the fastest-growing annuals from seed.

They don’t like being transplanted so it’s best to sow the seeds direct in the garden in spring when the weather has warmed up.

Zinnia flower

Growing annual flowers from seeds is a great way to fill up your garden beds, pots and containers with lots of beautiful blooms.

It’s also a good way to save money and get the kids involved in gardening.

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What are your favorite annuals to grow from seed? Let me know in the comments below.

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Easy annuals to grow from seed

Easy Annuals to Grow From Seed

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Kelly Martin

Hi, I'm Kelly Martin. I'm passionate about gardening and horticulture and I love growing just about everything including herbs, vegetables, flowers, succulents and indoor plants. I've been gardening most of my life and I created this blog to inspire beginner gardeners to create their own urban garden. Read more

This Post Has 9 Comments

  1. I’ve been wanting to make a garden and put perennials in it. After reading this post, however, and seeing in my mind how it will make our yard much more beautiful, I may go with annuals.

  2. Marigold (Tagetes) is one of my favorite flowers! Hope I can plant some at home. Nice list!

  3. These are gorgeous flowers. I’ve never heard of any of these before. i love learning about new plants and flowers through this blog.

  4. I seriously don’t have green fingers but love the idea of using seeds to grow these beautiful flowers. Most of the times I find that ready plants don’t even bloom. A good guidance for annuals to grow.

  5. Such great ideas and beautiful pictures too! I don’t have a garden but really wish I did after reading this blog!

  6. Though perennials are less effort in terms of planting every year, I love that annuals can be changed up every year. These are so beautiful!

  7. Great tips! Growing from seeds is so much cheaper but not as easy lol! You make it sound possible for even me, someone who doesn’t have the greenest thumb but actually likes to try!

  8. These are beautiful flowers to grow. I’ve been looking for more of these to plant in our garden.

  9. Oh my gosh it IS so much cheaper to get seeds than plants. It’s way more satisfying too, when they start to bloom. 🙂

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