Amaryllis bulbs are a gardener’s dream: low-maintenance, vibrant, and capable of bringing stunning blooms indoors or outdoors. Whether you’re growing them to brighten up your living room during the winter or to add charm to your garden, this complete guide will show you how to grow amaryllis bulbs successfully.
Understanding Amaryllis Bulbs
Amaryllis vs. Hippeastrum: What’s the Difference?
Many people use “amaryllis” to describe all plants in this family, but technically, most of the bulbs sold as amaryllis are Hippeastrum. True Amaryllis is native to South Africa and has only one species (Amaryllis belladonna), while Hippeastrum originates from South America and has numerous hybrid varieties. Despite the confusion, both produce breathtaking blooms and follow similar growing processes.
1. How to Plant Amaryllis Bulbs
Buying Amaryllis Bulbs
Start with healthy, large bulbs—larger bulbs typically produce more flowers. Look for firm, plump bulbs free of mold, soft spots, or discoloration. Trusted suppliers like Kamala’s Garden or Thompson & Morgan offer high-quality options in various colors and varieties.
When to Plant Amaryllis Bulbs
Plant amaryllis bulbs indoors about 6–8 weeks before you want them to bloom, typically between October and February. For outdoor planting, wait until the last frost has passed in spring if your climate permits.
Planting Indoors
- Choose the Right Pot: Use a pot about 1–2 inches wider than the bulb with drainage holes.
- Prepare the Soil: Opt for a well-draining mix enriched with organic matter.
- Position the Bulb: Place the bulb with its top one-third exposed above the soil.
- Water Sparingly: After planting, water lightly and avoid over-saturating the soil.
- Place in Bright Light: Keep the pot in a sunny spot, ideally near a south-facing window.
Planting Outdoors
If planting outdoors, ensure the soil is well-drained and rich in organic content. Dig a hole deep enough to cover two-thirds of the bulb, spacing multiple bulbs about 12 inches apart. Outdoor amaryllis thrives in USDA zones 8–10 with partial to full sun exposure.
2. Caring for Amaryllis Bulbs
Watering Tips
Water sparingly at first to encourage root growth. Once the leaves and flower stalk appear, increase watering but let the soil dry out slightly between sessions to prevent root rot.
Light and Temperature
Amaryllis loves bright, indirect sunlight. Indoors, place it in a room with temperatures between 60°F and 70°F. Outdoor plants thrive in similar conditions, with some tolerance for warmer weather.
Fertilizing
Feed your amaryllis every two weeks with a balanced fertilizer, starting once the leaves emerge. Use a product high in potassium and phosphorus to support blooming. Stop fertilizing after the flowering period ends.
3. Encouraging Amaryllis to Rebloom
After-Bloom Care
- Remove Spent Flowers: Cut the flower stalks near the base once blooms fade, but keep the leaves intact.
- Continue Care: Water and fertilize regularly to strengthen the bulb for next season.
Forcing Amaryllis Bulbs to Rebloom
- Stop Watering: In late summer, reduce watering to prepare the bulb for dormancy.
- Move to a Dark, Cool Spot: Store the bulb in a space with temperatures between 50°F and 55°F for 6–8 weeks.
- Reintroduce to Light and Water: After dormancy, repot the bulb, water lightly, and place it in a sunny spot to initiate growth.
4. Common Problems and Solutions
Pests and Diseases
- Pests: Watch for aphids, spider mites, or mealybugs. Use insecticidal soap or neem oil to address infestations.
- Diseases: Prevent fungal issues like red blotch by ensuring proper drainage and avoiding overwatering.
Troubleshooting Non-Blooming Bulbs
- Insufficient Light: Move the bulb to a brighter location.
- Nutrient Deficiency: Feed with a balanced fertilizer.
- Improper Dormancy: Ensure the bulb had a sufficient resting period.
Frequently Asked Questions
1. When Do You Plant Amaryllis Bulbs?
Plant them indoors 6–8 weeks before your desired bloom time, or outdoors after the last frost in spring.
2. Can Amaryllis Grow Outside?
Yes, in USDA zones 8–10, amaryllis can grow outdoors in well-drained soil with plenty of sunlight.
3. How Do I Get My Amaryllis to Flower Again?
Encourage reblooming by pruning spent blooms, fertilizing during the growing season, and giving the bulb a proper dormancy period.
Additional Tips and Tricks
Creative Displays for Amaryllis Blooms
Showcase your amaryllis indoors in decorative pots or group multiple plants for a dramatic display. Outdoors, pair them with companion plants like hostas or ferns for added visual interest.
Repotting Amaryllis Plants
Repot every 2–3 years or when the bulb outgrows its container. Use fresh soil and ensure proper drainage to maintain healthy growth.
Related Resources
For more on amaryllis care, check out:
- Kamala’s Garden for gardening insights.
- Thompson & Morgan for purchasing high-quality bulbs.
Growing amaryllis bulbs at home is a simple yet rewarding way to enjoy vibrant, long-lasting blooms. Whether indoors or outdoors, these stunning plants bring beauty and life to any setting. Follow this complete guide to ensure your amaryllis thrives and reblooms year after year.