The Best Flowers to Start from Seed: Easy Blooms for Every Garden

The Best Flowers to Start from Seed: Easy Blooms for Every Garden

If you're dreaming of a flower-filled yard or a blooming balcony garden, there's no better place to start than with seeds. Not only is it affordable and rewarding, but growing your own flowers from seed gives you more variety and control over your garden. Here at Trailing Petunia, we believe the best gardens start from the ground up โ€” literally.

But which flowers are the best to grow from seed?

Hereโ€™s our top list of easy, vibrant, and fast-growing flowers that are perfect for beginners and pros alike.

๐ŸŒฑ 1. Zinnias โ€“ The Bright Summer Showstopper

Zinnias are beginner-friendly, grow fast, and come in a rainbow of colors. These annuals thrive in full sun and are perfect for cutting gardens, borders, or pots. Sow directly into warm soil, and youโ€™ll see blooms in just weeks.


๐ŸŒผ 2. Cosmos โ€“ The Effortless Wildflower Look

Want a whimsical, wildflower vibe? Cosmos are your best friend. These tall, feathery-stemmed flowers add movement and grace to any garden. They're drought-tolerant and self-sow easily for blooms year after year.


๐ŸŒบ 3. Marigolds โ€“ Pest Fighters with Flair

Marigolds are not only stunning in golden hues, but they also help repel garden pests. Perfect for veggie garden companions, they sprout quickly and flower all summer long.

Which Flower Seeds Should I Choose?

At Garden Starts Nursery, we grow plants from seed in our working nursery. Our online stores sell seeds, not live plants. Start with the space you have: Proud Mari Mix is the compact choice at about 10โ€“12 inches tall, while Zesty Mix reaches 18โ€“24 inches. Cupcakes White cosmos and Always Sunny Gold sunflower need more room, with listed heights of 36โ€“46 inches and 40โ€“62 inches respectively.

For calendula, choose Pink Surprise for softer cream and peach-pink tones on plants around 16 inches tall, or Orange King for vivid orange flowers at about 24 inches. Packet sizes below are 25 or 50 seeds, except Always Sunny Gold, which contains 15 seeds.

Zesty Mix zinnias in white, yellow, pink, orange and purple

Zesty Mix Zinnia

25 seeds. Fully double mixed-color blooms on plants 18โ€“24 inches tall.

Best for: colorful sunny borders and patio containers.

Buy Now
Cupcakes White cosmos with pleated white petals and yellow centers

Cupcakes White Cosmos

50 seeds. White flowers on plants 36โ€“46 inches tall.

Best for: airy white flowers and cut-flower planting.

Buy Now
Proud Mari Mix marigolds with yellow, gold and orange double blooms

Proud Mari Mix Marigold

25 seeds. Large double flowers on compact 10โ€“12-inch plants.

Best for: shorter sunny borders and small garden spaces.

Buy Now
Always Sunny Gold sunflower with golden-yellow petals and a dark center

Always Sunny Gold Sunflower

15 seeds. Branching plants 40โ€“62 inches tall with golden, pollen-free blooms.

Best for: taller garden color and cut flowers.

Buy Now
Pink Surprise calendula with cream and peach-pink petals and dark centers

Pink Surprise Calendula

50 seeds. Soft cream and peach-pink tones; plants around 16 inches tall.

Best for: softer calendula colors in beds and borders.

Buy Now
Orange King calendula with vivid orange double flowers

Orange King Calendula

50 seeds. Bright orange flowers; plants around 24 inches tall.

Best for: bold orange color in a flower bed.

Buy Now

๐ŸŒป 4. Sunflowers โ€“ Tall, Happy, and Iconic

Few things say summer like a towering sunflower. Whether youโ€™re growing the giant kind or a dwarf variety, sunflowers are one of the easiest flowers to start from seed โ€” and kids love them too!


๐ŸŒธ 5. Calendula โ€“ The Healing Bloom

Also known as pot marigold, calendula is a charming edible flower thatโ€™s both beautiful and useful in herbal remedies. It thrives in cooler weather and brings a pop of orange and yellow early in the season.


๐Ÿก Ready to Grow?

All of these seeds (and more!) are available at Trailing Petunia. Whether youโ€™re planning a full flowerbed or just want to try a few pots on your porch, starting with seed is the most affordable way to create a stunning garden that blooms all season.

๐Ÿ’ฌ Have a favorite flower youโ€™ve grown from seed? Tell us in the comments!
๐Ÿ›’ Browse our hand-selected flower seeds now โ†’ Shop Flower Seeds

๐ŸŒธ Ready to Grow Something Beautiful?

Explore our top-quality flower, herb, and vegetable seeds and bring your garden dreams to life.
๐Ÿ›’ Shop All Seeds Now ยป

Colorful Zesty Mix zinnia flowers

Find more flower seed choices in our collections.

Yellow and orange marigold flowers illustrating a colorful garden planting

Planning a bigger planting? Explore larger seed packs on our bulk sister site.

Keep Growing with Garden Starts Nursery

Garden Starts Nursery gardening videos on YouTube

Subscribe to us on YouTube for growing tips from our working nursery.

Back to blog