20 Fast Growing Flowers

Raul is an Editor at BalconyGardenWeb and an expert in flower and herb cultivation based in Phoenix, Arizona. A frequent speaker at horticultural events, he is also an active contributor to Facebook flower groups. Holding an MBA degree, Raul blends his gardening skills with strong leadership and analytical abilities.
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Looking for some fast growing flowers that can take over your garden in no time? These blooms are speedy beauties!

Foliage plants are fine but it is the flowers we all want! And if we get them sooner, like without waiting for too long after planting would be great, right? Well, you are in for a treat!

Fast Growing Flowers

1. Sweet Alyssum

Fast Growing Flowers

Botanical Name: Lobularia maritima

Sweet Alyssum flowers are fast and low-growing. Planted from seed, they’ll sprout in just a couple of weeks and be showering you with those lovely honey-scented blooms in about 6-8 weeks.

2. Calendula

Fast Growing Flowers in garden

Botanical Name: Calendula officinalis

Calendula flowers are just as fast as Sweet Alyssum. Plant them from seed and watch for sprouts in a week or two. They don’t need much care, either, and will thrive once they sprout, giving you flowers in 7-8 weeks.

3. Snapdragons

The Best Flowers for Quick Growth 3

Botanical Name: Antirrhinum majus

These fast growing flowers will surely amaze you with their sheer height! Snapdragons come in gorgeous shades of pink, white, or red, and usually take 8-10 weeks after planting to start flowering. 

4. Nasturtiums

Best Flowers for Fast Growth

Botanical Name: Tropaeolum majus

Nasturtiums are great when it comes to speedy growth. If you’re planting one of these from seeds, they’ll sprout in about a week. Just care for them and you’ll see the edible flowers appearing within 2 months. 

5. Annual Phlox

Best Flowers for Speedy Growth 1
Longfield Gardens = Flower Bulbs

Botanical Name: Phlox drummondii

Annual Phlox might not be as fast-growing as nasturtiums, but these flowers do grow quickly. They take their sweet time before flowering, but the 8-10 week wait is totally worth it because the flowers keep spreading their scent all summer long!

6. Wax Begonia

Quick-Growing Flowers

Botanical Name: Begonia x semperflorens-cultorum

Wax Begonias are also fast growing flowers. Why? Well, they sprout in just 10-15 days and start flowering in about 10 weeks. But hey, no need to worry! While they might be a little slower, wax begonias are known for being low-maintenance. 

7. Cornflowers

Extremely fast  Growing Flowers

Botanical Name: Centaurea cyanus

Cornflowers are a happy medium between speedy and slow in the flower world. They’re not quite as fast as some of the others we’ve talked about, but they’re not slouches either! You’ll see them flowering about 8-10 weeks after planting the seeds.

8. Daffodils

Fast Growing Flowers in pot

Botanical Name: Narcissus pseudonarcissus

If you reside in a zone that does not experience any huge rainfall or scorching temperatures, you may want to pick Daffodils. You can find this flower that grows fast in orange, yellow, or white shades, and it begins flowering in just 4-6 weeks!

9. Marigold

Best Flowers for Speedy Growth 1

Botanical Name: Tagetes spp.

It is always a safe bet to put your money on this fast grower–Marigold. These flowers are ready in about 6-8 weeks from sowing. But if you can get your hands on a cutting, the wait will be even less!

10. Nigella

Fast Growing Flowers in garden 4

Botanical Name: Nigella damascena

Nigella is also called Love-in-a-Mist and produces beautiful pastel blooms bordered by lacy foliage. These flowers sprout in just 2-3 weeks and fill your garden with its beauty in about 2-3 months. 

11. Johnny Jump-ups

Fast Growing Flowers in hanging basket

Botanical Name: Viola tricolor

Johnny Jump-ups sprout quickly from seed and keep blooming all through spring and even into fall. Just give them some well-drained soil and plenty of light—they’ll paint your garden with vibrant purples, yellows, and whites in no time!

12. Impatiens

Fast Growing Flowers in wall planters

Botanical Name: Impatiens walleriana

Impatiens are also called Touch-Me-Not, and usually grow up to 2-3 feet tall. These flowers are really pretty, and the seeds mature in about 8 weeks. People say that they grow even more quickly if you plant them close to each other. Do try it!

13. Sweet Pea

Beautiful Fast Growing Flowers

Botanical Name: Lathyrus odoratus

Sweet Pea flowers are fast growers but they’re no sweet alyssums. You should sow the seeds indoors for a couple of weeks before the last frost and care for them—they’ll reward you with pretty flowers in about 10 weeks. Plus, they look wonderful on trellises. 

14. Petunias

Fast Growing Flowers in pot 56

Botanical Name: Petunia

You can enjoy Petunias for a long time, especially if you take good care of them. Don’t let them sit in soggy soil, and give them 6-8 hours of sun every day. If you’re growing it, best do it with a cutting from a local garden center—it will bloom within a few weeks!

15. Morning Glory

Fast Growing Flowers in garden pot 34

Botanical Name: Ipomoea purpurea

You can pick Morning Glory for its old-fashioned charm and flowers in the shape of trumpets. This fast growing bloom needs about 1-2 weeks to germinate and start flowering at the 2-month mark. They keep blooming from early summer until the first frost of fall. 

16. Pansy

Best Flowers for Speedy Growth

Botanical Name: Viola tricolor var. hortensis

Pansy is another fast growing flower with lovely tri-colored petals. Usually, it takes 7-21 days to grow from planting. And then it can take 10-12 weeks to start flowering.  

17. California Poppy

Fast Growing Flowers in Outdoor pot

Botanical Name: Eschscholzia californica

California Poppies flower from late winter through early summer and need about 10-20 days to germinate. Once the seedlings are ready, put them in pots or the garden bed outdoors, and they’ll show you their lovely flowers in about 2 months.

18. Zinnia

Fast Growing Flowers in garden 78

Botanical Name: Zinnia elegans

You can find Zinnias in almost any imaginable color. They grow pretty fast, too; after sowing, tiny seedlings usually appear in 3-7 days. And the flowers follow 5-6 weeks later. And if you want never-ending Zinnias, follow these tricks.  

19. Cosmos

Top Flowers for Quick Growth 1

Botanical Name: Cosmos bipinnatus

Cosmos is known to be considered out of this world, and you can choose to grow these fairly quickly. From planting the seeds to when the first flowers appear, the total time is about 50-60 days, so they’re really fast growing flowers. 

20. Sunflower

Best Fast Growing Flowers

Botanical Name: Helianthus annuus

There are only a handful of flowers that can match the beauty of Sunflowers. The seeds are really quick to germinate and only take about a week. Sunflower buds form around 5-10 weeks after sowing. They will then take an additional 8-10 days to open and reveal the glorious blooms we all know and love!

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