Jonquil
Narcissus jonquillaUSDA | Grow Zone
7-9Outdoors all year in zones 7 to 9. Anywhere colder, keep it as a houseplant. Protect it below 30°F.
- Light
- Full sun to partial shade
- Water
- Every 1-2 weeks
- Humidity
- 40-60%
- Temperature
- 50-70°F
- Difficulty
- Beginner
- Growth
- Moderate
- Mature size
- 12-18 in tall
- Pets
- Toxic to pets and humans
Narcissus jonquilla, commonly known as Jonquil, is a charming spring bulb native to Europe. With fragrant yellow flowers, it brings beauty and joy to gardens, making it a favorite among gardeners.
Ask Vesper about Jonquil
Ideal temperature
50-70°F is where it grows fastest. Below 30°F cold damage starts.
Spacing and harvest
- Mature size
- 12-18 in tall
- Plant apart
- 6-12 in
- Frost
- Half hardy: light frost only
Everything it needs
9 essentials at a glance
Watering
Narcissus jonquilla prefers moderate watering.
Water the plant every 1-2 weeks during the growing season, allowing the top inch of soil to dry out between waterings. In the dormant season, reduce watering significantly. Signs of over-watering include yellowing leaves and root rot, while under-watering can cause wilting and browning of leaf tips.
Light
This plant thrives in full sun to partial shade.
Ideally, it should receive at least 6 hours of direct sunlight daily. In hotter climates, some afternoon shade can help prevent leaf scorch. Jonquils can tolerate light shade but may produce fewer flowers.
Soil
Narcissus jonquilla prefers well-draining soil with a pH range of 6.0 to 7.0.
A mix of loamy soil with sand or perlite is ideal to ensure good drainage. Avoid heavy clay soils that retain moisture, as this can lead to bulb rot.
Humidity
Jonquils prefer moderate humidity levels, around 40-60%.
To increase humidity, you can mist the leaves or place a tray of water near the plant. Signs of low humidity stress include browning leaf tips and slowed growth.
Temperature
The ideal temperature range for Narcissus jonquilla is 50-70°F (10-21°C).
They are hardy in USDA zones 7-9. They can tolerate light frost but should be protected from extreme heat, which can cause the bulbs to go dormant prematurely.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 during the growing season, applying every 4-6 weeks.
In the fall, switch to a low-nitrogen fertilizer to promote bulb health. Signs of nutrient deficiency include stunted growth and poor flowering.
Pruning
Prune Narcissus jonquilla after the foliage has died back completely, usually in late spring or early summer.
Use clean, sharp scissors to cut the leaves at the base. Deadheading spent flowers can encourage more blooms and improve the plant's appearance.
Repotting
Repot Narcissus jonquilla every 2-3 years or when the bulbs become crowded.
Choose a pot that is 1-2 inches larger in diameter than the current one. Signs that it needs repotting include poor growth and roots emerging from the drainage holes. Carefully remove the plant, refresh the soil, and replant.
Propagation
Narcissus jonquilla can be propagated through bulb division or seeds.
For bulb division, wait until the foliage has died back, then carefully dig up the bulbs and separate them. Replant the bulbs immediately in well-draining soil. If using seeds, sow them in a seed tray in late summer and keep them moist until germination, which may take several months.
When it's unhappy
Yellowing leaves
Why it happens
Over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and adjust watering frequency. Fertilize with a balanced fertilizer if nutrient deficiency is suspected.
Root rot
Why it happens
Excess moisture in the soil.
How to fix it
Ensure proper drainage and reduce watering. If root rot is severe, remove affected bulbs and replant in fresh soil.
Poor flowering
Why it happens
Insufficient light or nutrient deficiency.
How to fix it
Move the plant to a sunnier location and fertilize regularly during the growing season.
Browning leaf tips
Why it happens
Low humidity or under-watering.
How to fix it
Increase humidity levels by misting or using a humidity tray, and adjust watering schedule to keep the soil consistently moist.
Bulb rot
Why it happens
Planting in heavy, water-retentive soil.
How to fix it
Ensure well-draining soil and avoid over-watering. Remove any affected bulbs and replant in a suitable mix.
Care through the year
Spring
In spring, ensure your Jonquils receive plenty of sunlight and water regularly as they emerge from dormancy. Fertilize with a balanced fertilizer to promote healthy growth.
Summer
During summer, continue to water as needed but reduce frequency as the plant enters dormancy. Deadhead spent flowers to encourage more blooms.
Fall
In fall, prepare for dormancy by reducing watering and applying a low-nitrogen fertilizer to support bulb health. Allow the foliage to die back naturally.
Winter
In winter, protect the bulbs from extreme cold by mulching. Ensure the soil remains dry to prevent rot, and avoid watering until spring.
Toxicity & Safety
Narcissus jonquilla is toxic to pets and humans if ingested. All parts of the plant contain toxic compounds that can cause nausea, vomiting, and diarrhea. Symptoms of ingestion include stomach upset and lethargy.
Good to know
How often should I water my Jonquil?
Water your Jonquil every 1-2 weeks during the growing season, allowing the top inch of soil to dry out between waterings.
Why are my Jonquil leaves turning yellow?
Yellowing leaves can indicate over-watering or a nutrient deficiency. Check the soil moisture and consider fertilizing if needed.
What type of soil is best for Narcissus jonquilla?
Narcissus jonquilla prefers well-draining soil with a pH range of 6.0 to 7.0. A mix of loamy soil with sand or perlite works well.
When should I prune my Jonquil?
Prune your Jonquil after the foliage has died back completely, usually in late spring or early summer, to maintain its health.
Can I grow Jonquils indoors?
Yes, Jonquils can be grown indoors if they receive enough sunlight, ideally at least 6 hours of direct light per day.
What temperature is ideal for Jonquils?
Narcissus jonquilla thrives in temperatures between 50-70°F (10-21°C) and is hardy in USDA zones 7-9.
How do I propagate Jonquils?
You can propagate Jonquils through bulb division or seeds. For bulb division, wait until the foliage dies back, then separate and replant the bulbs.
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