Skip the winter doldrums and grow a rainbow of pretty spring blooms by forcing bulbs to flower inside your home.
Jump-Start Spring by Forcing Bulbs Indoors
Updated on Oct. 02, 2024
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Tips for Forcing Bulbs Indoors
Keep your restless green thumb busy, no matter the weather, when you grow a springy flower garden inside by forcing bulbs to bloom. From daffodils and hyacinths to irises and tulips, the bright colors and sweet scents cheer up any gardener dealing with winter cabin fever.
Pot the Bulbs
Fill a container most of the way with moist potting mix, or pebbles if you’re planting hyacinths and paperwhites. Create a shallow hole for each bulb and plant it root side down, 1 to 2 inches deep, leaving the tip exposed. Crowd the bulbs in, but keep them from touching one another.
Cool the Bulbs Down
If your bulbs aren’t prechilled, place the pot in a dark, cool spot, such as a garage, unheated sun porch or fridge. Keep them at a chilly 35 to 45 degrees Fahrenheit. This process takes about 12 weeks to complete, but less for certain iris bulbs.
Keep Tabs on Your Bulbs
Make sure the potting mix stays moist, watering gently as needed. The first flower tips appear within a few weeks. Once the emerging sprouts are an inch high, move the container into a cool, dim room for about a week as the stems and flower buds continue to grow. Miniature Tete-a-Tete daffodils, ideal for forcing, grow to about 6 inches tall.
Add Some Light
Transfer the potted bulbs into a bright room; this will encourage them to bloom. Continue to water occasionally to ensure the soil stays damp. If the stems become tall or top-heavy, insert a slender stake into the pot. Then, sit back and enjoy!
What to Do After the Bulbs Bloom
When the blooms fade, you have two options: Compost the spent bulbs or replant them outdoors. If you’re going for a repeat performance, allow the foliage to die back, then plant the bulbs outdoors in fall as you normally would. Be prepared for the flowers to take a year off while they recover from their unexpected season.
Can You Grow Bulbs Without Soil?
Skip the soil and force crocuses and hyacinths to sprout in water. Use a narrow-necked vase that holds the bulb just above the waterline. Then, put in a cool, dark place until roots fully form. After sprouts are 2 to 4 inches tall, move to a warm, sunny room to finish flowering.
Give Bulbs as a Gift
Share a piece of spring with your loved ones. Fill a small, decorative container with plump paperwhite bulbs. Include growing instructions and a separate pouch of clean pebbles or rock chips to act as the potting mix. Place everything in a gift bag and your plant present is complete!
Sources
Guide to Houseplants – Growing Daffodils Indoors: Steps to Forcing Bulbs
