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Asparagaceae HERB OUTDOOR Placement Primary: Ornamental Aromatic

Hyacinth

Hyacinthus orientalis

Identified By Unknown Guest

Hyacinth is a popular bulbous spring-blooming perennial plant native to the eastern Mediterranean region. Known for its dense, spiked clusters of fragrant, bell-shaped flowers, hyacinths add vibrant color and an intoxicating sweet scent to gardens early in the growing season. They grow from underground bulbs, sending up glossy, strap-shaped green leaves before producing their magnificent floral towers in shades of blue, pink, white, purple, and yellow. Highly valued in ornamental horticulture, hyacinths thrive in well-drained soils under full sun to partial shade conditions and require a period of cold dormancy to successfully bloom year after year.

Also known as: Common Hyacinth Garden Hyacinth Dutch Hyacinth

Toxicity & Safety

Is Hyacinth toxic to pets?

Yes, toxic to pets.

Hyacinths contain toxic calcium oxalate crystals, particularly concentrated within the bulb. If ingested by cats or dogs, these sharp crystals can cause intense irritation to the mouth, tongue, and esophagus, leading to excessive drooling, vomiting, and severe gastrointestinal distress. Immediate veterinary attention is recommended if any pet is suspected of chewing or swallowing parts of the hyacinth plant.

Is Hyacinth toxic to humans?

Yes, toxic to humans.

The entire hyacinth plant is toxic to humans, with the highest concentration of harmful alkaloids and calcium oxalate crystals located in the bulb. Accidental ingestion of the bulbs can cause severe stomach upset, nausea, vomiting, diarrhea, and irritation of the mucous membranes. Handling the bulbs directly may also cause skin irritation or contact dermatitis in sensitive individuals, so wearing gardening gloves is strongly advised.

Is Hyacinth safe during pregnancy?

Caution advised during pregnancy.

Due to the presence of toxic calcium oxalate crystals and potentially harmful alkaloids throughout the plant tissues, pregnant women should avoid handling hyacinth bulbs without protective gloves and strictly prevent any ingestion. Systemic toxicity from accidental poisoning can pose severe health risks that may adversely affect pregnancy, making extreme caution and professional medical consultation essential if exposure occurs.

Growth & Dimensions

Height 20 - 30 cm
Width 10 - 15 cm
Growth Rate Moderate
Care Level Easy
Lifespan Perennial

Ideal Environment

Temperature -15°C - 25°C
Sunlight Hours 6 - 8 hrs/day
Sun Exposure Full sun
Soil pH 6 - 7
Watering Interval 7 - 14 days
Humidity 40.00% - 60.00%
USDA Zone 4 - 8

Temperate Regions

Climate: Thrives best in temperate climates that experience distinct seasonal changes, including cold winters required to trigger spring flower development.

Soils: Loam Sandy Loam Chalk
Annual Rainfall: 500 - 1000 mm

Native Regions

Eastern Mediterranean
Turkey
Syria
Lebanon

How to Care for Hyacinth

How should I handle sunlight?

Plant in a location that receives full sun to partial shade. At least 6 hours of direct sunlight daily promotes the best flower development.

How should I handle soil and fertilizer?

Requires rich, well-draining soil. Amend with organic matter if necessary. Apply a balanced bulb fertilizer in early spring as new growth emerges.

How should I handle pruning?

Cut back spent flower stalks after blooming to prevent seed formation. Allow the leaves to yellow and die back naturally before removing them, as foliage feeds the bulb for next year.

How should I handle proper watering techniques?

Water hyacinths consistently during their active growing and blooming season when the top soil feels dry to the touch. Ensure the soil receives adequate moisture but never remains waterlogged, as stagnant wet conditions quickly cause the underground bulbs to rot. Reduce watering significantly once the foliage begins to yellow and die back naturally in the late spring or early summer.

How to Propagate Hyacinth

How to propagate Hyacinth by division?

Carefully lift mature hyacinth clumps from the ground after the foliage has completely died back in early summer. Gently separate the small offsets or bulblets that have formed naturally around the base of the parent bulb. Replant these separated bulblets immediately in a new, well-prepared location with appropriate soil depth, ensuring they receive proper spacing and care to establish independent root systems and future blooms.

Common Diseases & Pests of Hyacinth

What is Bulb Rot and how is it treated?

Fungal
Symptoms:

Affected plants show stunted growth, yellowing foliage, and eventual collapse of the entire stem. When inspected, the underground bulb exhibits soft, mushy, discolored patches often accompanied by a foul, rotting odor.

Treatment:

Immediately dig up and discard severely infected plants and surrounding contaminated soil to prevent the spread of fungal pathogens to neighboring healthy specimens.

Prevention:

Plant hyacinth bulbs exclusively in well-draining soil mixtures, avoid overwatering, and ensure proper spacing between individual bulbs to guarantee adequate air circulation and moisture evaporation.

Properties & Benefits of Hyacinth

Aromatic Plant

Key Nutrients / Compounds

Calcium Oxalate high Toxic compound present in tissues

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