20 Fast-Growing Flowers (Plus Some Surprising Gems)

Plant Care
By Harris Cole

Discover the vibrant world of fast-growing flowers, where beauty meets speed. These blooms are perfect for gardeners impatient for a splash of color. From classic favorites to unexpected treasures, each flower offers its unique charm and personality. Whether you’re looking to fill your garden quickly or explore some surprising gems, these flowers will provide a delightful journey into the world of rapid growth and stunning blooms.

1. Sunflowers

© Applewood Seed Company

Sunflowers, with their towering stalks, capture the essence of summer. These bright blooms grow rapidly, adding a cheerful presence to any garden. Their vibrant yellow petals dance in the breeze, reflecting sunlight like living mirrors. Children and adults alike are enchanted by their impressive height and bold appearance.

In addition to their beauty, sunflowers offer practical benefits. They attract pollinators and provide seeds for birds and humans. Whether in a field or a backyard, their striking appearance never fails to delight.

Did you know? Sunflowers can grow several feet in just a few weeks. Incredible!

2. Marigolds

© Gardener’s Path

Marigolds bring a pop of color to gardens with their rich orange and yellow hues. Known for their rapid growth, these flowers can quickly transform a dull garden into a bright, welcoming space. Their sturdy petals and bold colors make them a favorite among gardeners.

These flowers aren’t just about looks; they’re functional too. Marigolds help repel pests, making them a gardener’s best friend. Easy to grow and maintain, they’re perfect for beginners.

Fun fact: Marigolds are often used in cultural festivals for their vibrant colors and are considered symbols of celebration.

3. Zinnias

© Vermont Wildflower Farm

Zinnias are the life of any garden party, with their diverse color palette and exuberant blooms. These flowers grow quickly, providing an array of hues from pinks to reds and oranges. Their daisy-like structure adds a touch of whimsy to flower beds.

Gardeners love zinnias for their low-maintenance nature. They thrive in sunlight and require minimal care, making them ideal for busy garden enthusiasts. Their long-lasting blooms add continuous beauty throughout the season.

Did you know? Zinnias are native to Mexico and symbolize lasting affection. A wonderful choice for any garden!

4. Morning Glories

© Graceful Gardens

Morning glories greet the day with their delicate, trumpet-shaped blooms. These climbers grow swiftly, wrapping themselves around trellises or fences, adding vertical interest to gardens. Their pastel colors and soft petals create a serene, enchanting atmosphere.

As their name suggests, morning glories bloom with the sunrise, bringing a sense of freshness and renewal. Their rapid growth makes them a favorite among gardeners looking to cover spaces quickly.

Interesting tidbit: Morning glories are often associated with the month of September and symbolize unrequited love. A poetic addition to any garden.

5. Nasturtiums

© Growing Spaces

Nasturtiums, with their vibrant blooms and edible leaves, are a gardener’s delight. Fast-growing and versatile, they can be planted in beds or hanging baskets. Their vivid red and orange flowers create a lively display that brightens any space.

These flowers are not just eye-catching; they offer culinary uses as well. Their peppery leaves and blossoms add flavor to salads and dishes. Nasturtiums attract pollinators, making them beneficial for the ecosystem.

Did you know? Nasturtiums were named after the Latin word for ‘nose-twister’ due to their pungent scent. A sensory delight!

6. Petunias

© Atlanta Turf & Tree

Petunias are the epitome of grace and color in any balcony garden. These fast-growing flowers offer a wide range of colors, from soft pastels to deep purples. Their cascading form creates a lush, full appearance that enhances any setting.

Gardeners appreciate petunias for their continuous blooms and low maintenance. They thrive in sunny spots and require regular watering to stay vibrant. Perfect for hanging baskets or planters, they add elegance to outdoor spaces.

Fun fact: Petunias originated in South America and are often associated with comfort and soothing energy. Ideal for relaxation areas.

7. Cosmos

© Garrett Wildflower Seed Farm

Cosmos flowers exude a sense of natural beauty and elegance, growing quickly in meadows or gardens. Their soft pink and white petals create a dreamy, romantic atmosphere, attracting butterflies and bees.

These flowers are easy to grow, thriving in poor soil conditions with little care. Their airy structure adds a touch of grace and movement to landscapes, making them a favorite for wildflower gardens.

Interesting fact: Cosmos are native to Mexico and represent harmony and peace. Their name in Greek means ‘balanced universe,’ reflecting their serene presence.

8. Sweet Peas

© Sow Right Seeds

Sweet peas offer both fragrance and beauty, quickly climbing trellises with their delicate blooms. Their shades of pink and lavender create a romantic, nostalgic feel, perfect for old-world gardens.

These flowers are adored for their scent, often used in perfumes and bouquets. Their rapid growth makes them ideal for covering unsightly garden structures or adding vertical interest.

Did you know? Sweet peas were a favorite of Victorian-era gardeners, symbolizing blissful pleasure. Their enduring popularity speaks to their timeless charm.

9. Calendula

© Gardener’s Path

Calendula, known for its sunny disposition and medicinal properties, is a garden staple. These fast-growing flowers bloom in bright yellows and oranges, adding warmth to any garden setting.

Gardeners value calendula for its healing abilities, often used in skin creams and balms. Its cheerful blooms attract pollinators, supporting the garden’s ecosystem.

Fun fact: Calendula is sometimes called ‘pot marigold’ and has been used in herbal remedies for centuries. Its name derives from the Latin ‘calendae,’ meaning ‘little calendar,’ due to its long blooming period.

10. Larkspur

© TN Nursery

Larkspur adds height and drama to gardens with its tall spikes of blue and purple flowers. These fast-growing blooms create a stunning vertical display, perfect for the back of flower beds.

Beyond their beauty, larkspur flowers symbolize strong love and attachment, making them a thoughtful choice for bouquets. Their rapid growth and striking appearance ensure they stand out in any garden.

Interesting tidbit: Larkspur is often associated with the month of July and is a favorite among cottage garden enthusiasts. Its captivating presence enchants all who see it.

11. Poppies

© Kyrgyz Tourism

Poppies captivate with their vivid red petals and delicate structure. These iconic flowers grow quickly, often seen swaying in fields, creating a mesmerizing sea of color.

Their symbolism of remembrance and peace adds depth to their beauty. Gardeners appreciate poppies for their ease of growth and self-seeding nature, which ensures they return year after year.

Did you know? Poppies have been used in art and literature for centuries, often symbolizing sleep and dreams. Their enchanting appearance continues to inspire creativity.

12. Snapdragons

© Graceful Gardens

Snapdragons bring a touch of whimsy to gardens with their unique dragon-shaped blooms. These flowers grow rapidly, offering a range of colors from pink to yellow and red. Their playful appearance delights children and adults alike.

Gardeners love snapdragons for their long blooming period and ability to attract pollinators. They’re easy to grow and make excellent cut flowers for arrangements.

Fun fact: The name ‘snapdragon’ comes from the flower’s resemblance to a dragon’s mouth, which ‘snaps’ open when squeezed. A fun and interactive garden addition!

13. Impatiens

© Southern Living

Impatiens thrive in shady corners, offering delicate pink and white blooms. These fast-growing flowers add a soft, soothing touch to gardens, brightening dark spaces with their gentle colors.

Gardeners appreciate impatiens for their resilience and ability to flower continuously. They’re perfect for containers or as ground cover, providing a lush, full appearance.

Did you know? Impatiens are also known as ‘busy Lizzies’ in the UK, named for their prolific blooming habits. Their cheerful presence is a joy to behold in any garden setting.

14. Four O’Clocks

© Dengarden

Four O’Clocks bring evening magic to gardens, with blooms that open late in the day. Their vibrant pink and yellow flowers glow in the fading light, creating an enchanting atmosphere.

These flowers are easy to grow and adapt well to various garden conditions. Their sweet fragrance adds to their appeal, attracting evening pollinators.

Fun fact: Named for their blooming time, Four O’Clocks are also called ‘Marvel of Peru,’ native to South America. Their ability to close during the day and open at dusk is truly fascinating.

15. Alyssum

© Pinetree Garden Seeds

Alyssum, with its clusters of tiny white flowers, creates a delicate carpet in gardens. These fast-growing blooms offer a sweet fragrance, enhancing the sensory experience of outdoor spaces.

Gardeners love alyssum for its versatility and ability to fill gaps in flower beds. It thrives in sunny spots and requires minimal care, making it a great choice for busy garden enthusiasts.

Did you know? Alyssum is often used as a ground cover or edging plant, symbolizing beauty and calmness. Its subtle charm adds grace to any garden.

16. Dahlias

© Riverside Nursery

Dahlias are the showstoppers of gardens, with their layered blooms and vibrant colors. These flowers grow quickly, offering an array of shapes and sizes, from small pom-poms to large dinner-plate varieties.

Beyond their beauty, dahlias are prized for their long blooming season, adding continuous interest to gardens. They’re perfect for cutting and creating stunning floral arrangements.

Fun fact: Dahlias are native to Mexico and were once used as a food source. Their diverse forms and colors make them a versatile and captivating garden choice.

17. Lavatera

© Arundel Arboretum

Lavatera, often called tree mallow, adds tropical flair to gardens with its large pink blooms. These fast-growing flowers thrive in coastal areas, offering a splash of color against the sea’s blue backdrop.

Gardeners adore lavatera for its resilience and ability to bloom throughout the summer. Its bushy growth makes it a great choice for hedges or borders.

Did you know? Lavatera is named after Swiss botanists, the Lavater brothers. Its ability to thrive in various conditions makes it a versatile addition to gardens worldwide.

18. Coreopsis

© American Meadows

Coreopsis, with its sunny yellow blooms, brings joy to any meadow or garden. These fast-growing flowers offer a cheerful presence, attracting butterflies with their bright petals.

Gardeners appreciate coreopsis for its drought tolerance and long-lasting blooms. It’s an ideal choice for low-maintenance gardens, providing color throughout the growing season.

Fun fact: Also known as tickseed, coreopsis is native to North America and symbolizes cheerfulness. Its effortless beauty makes it a favorite among wildflower enthusiasts.

19. Salvia

© Clovers Garden

Salvia adds a touch of elegance to gardens with its tall spikes of purple and blue flowers. These fast-growing blooms are not only beautiful but also attract pollinators like bees and butterflies.

Gardeners love salvia for its drought resistance and long blooming period. It’s perfect for adding height and color to borders and flower beds.

Did you know? Salvia is part of the mint family and has been used in herbal remedies for centuries. Its vibrant colors and aromatic foliage make it a delightful garden addition.

20. Verbena

© Plant Addicts

Verbena offers charm and vibrancy to gardens with its clusters of colorful blooms. These fast-growing flowers are ideal for hanging baskets, creating a cascading effect that catches the eye.

Gardeners appreciate verbena for its heat tolerance and continuous flowering. It’s a favorite for summer gardens, adding color and attracting pollinators.

Fun fact: Verbena is often associated with healing and protection in folklore. Its enduring beauty and versatility make it a cherished addition to gardens worldwide.