Hyacinth / Dutch Hyacinth
Hyacinthus orientalis
description
Hyacinth is a spring bulb prized for dense spikes of strongly fragrant flowers.
benefits
- Flowering
- Suitable for containers
warnings
- Toxic to cats
- Toxic to dogs
How to care for Hyacinth
sunlight
Hyacinths grow in open, sunny places and make their best flower spikes in the brightest spot available at home.
Full sun to bright light
Place a potted hyacinth on an east-, south-, or west-facing windowsill, where it can receive several hours of direct sun or very bright daylight. Low light encourages pale, leaning stems and shorter-lasting blooms.
watering
Keep the compost lightly moist while your hyacinth has leaves or flowers, but never leave the bulb sitting in wet soil. Water thoroughly, then let excess drain away.
While growing and flowering
Check about twice a week and water roughly every 4-7 days indoors when the top 1-2 cm of compost feels dry. A warm, bright spot and a small terracotta pot dry faster; cool, low-light conditions slow thirst. The pot should feel noticeably lighter before you water again.
After flowering and dormancy
Keep watering sparingly, about every 7-10 days, while the leaves remain green so they can feed the bulb. Once the foliage has yellowed and died back, stop regular watering and keep the pot almost dry until the next growing season.
humidity
Preferred humidity
Hyacinths grow and flower best in the cool, moist air of spring. Average household humidity is usually fine, but keep flowering pots away from radiators, heat vents, and other hot, dry spots.
They tolerate roughly 35-60% humidity. Air that is too dry, especially when warm, can make flower buds brown, blooms fade quickly, and leaf tips crisp.
- Move the pot to a cooler, bright room if the air is dry.
- Set it on a pebble tray with water below the pot base, or group it with other plants.
- Do not mist the flower spike, as wet blooms can spot or rot.
temperature
Growing and flowering
Bulb chilling
Hyacinths come from climates with cool winters and dry summers. For indoor blooms, most bulbs need about 10-12 weeks at 4-9°C (39-48°F) before growth begins. Once shoots appear, keep them cool and bright rather than warm.
nutrition
March - June
For outdoor hyacinths, feed once as shoots emerge with a balanced bulb fertilizer at about half the label strength. A second light feed after flowering can help the bulb recharge while leaves are still green. Stop when foliage yellows. Newly forced indoor pots usually need no fertilizer because the bulb already holds the energy for one display.
Phosphorus
Phosphorus supports root growth and helps bulbs store energy for next spring. A balanced bulb fertilizer supplies enough without pushing soft leafy growth.
Potassium
Potassium supports sturdy growth and bulb health after flowering. It is most useful while the leaves are actively photosynthesizing.
soil
Loose, free-draining soil
Hyacinth bulbs need air around their roots and dislike sitting wet, especially while dormant. Use a loose potting mix with added perlite, grit, or coarse sand so excess water drains quickly.
pH 6,0 - 7,0
This is slightly acidic to neutral soil. Most general-purpose potting mixes suit hyacinths, but avoid strongly acidic mixes and refresh compacted soil before planting.