What's the fastest-blooming spring flower?
Written by
Michael Sullivan
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Fast-blooming spring flowers contribute instant color where there was only winter gray. My go-to early plants are sweet alyssum and calendula. These cool-season annuals bloom within six weeks of planting and are quick to bloom compared to slower-blooming varieties. Pre-warming the soil really speeds up their growth as well. I enjoy being labeled as early bloomers for my speed.
Top Performers
- Sweet alyssum flowers in 35-42 days from seed
- Calendula blooms in 45-55 days with continuous color
- Crocus bulbs emerge 2-3 weeks after planting
- Snowdrops push through snow in 14-21 days
Acceleration Techniques
- Pre warm soil with black plastic for 10 days
- Start seeds indoors 6 weeks before last frost
- Use bloom booster fertilizer at planting
- Select varieties labeled early or quick blooming
Proper soil preparation is key to growing quickly. I till my beds and add compost, which provides quick nutrient availability. I use floating row covers, which retain warmth and accelerate germination. The fastest calendar I grew emerged in 38 days with this method. Avoid nitrogen-laden fertilizers, which promote leaves over blooms.
Adjust for regional differences. In southern areas of the state, calendula can be planted in February for blooms in March. Northern gardeners utilize cold frames to achieve an early start. Coastal growers utilize the moderated temperatures of the ocean to increase their success. Mountain growers focus on bulbs that emerge through spring snow.
Combine with succession planting for continual color. I follow alyssum with fast-growing zinnias. Use a marker to denote bulb locations to prevent damaging the bulbs or disrupting their growth. Water at the root level to avoid wetting foliage and reduce disease issues. Protect seedlings from slugs with barriers made with Diatomaceous earth.
Track microclimate benefits. South-facing walls heat up more quickly, giving you a 7-day head start. Urban gardens capitalize on the warmth from pavements for early blooms. I planted alyssum near my brick path for an additional 10 days. Check soil temperatures regularly to determine the optimal timing.
Read the full article: When to Plant Flowers: Month-by-Month Guide
