Nerine bowdenii
Nerine bowdenii
Nerine bowdenii, commonly known as the Guernsey Lily, is celebrated for its vibrant, trumpet-shaped flowers that bloom in late summer to fall. Native to South Africa, this hardy bulb plant thrives in well-drained soil and prefers sunny locations, making it a popular choice for gardens and containers.
Everything it needs
9 essentials at a glance
Watering
Nerine bowdenii prefers well-drained soil and should be watered moderately.
During the growing season (spring and summer), water every 1-2 weeks, allowing the top inch of soil to dry out between waterings. In fall and winter, reduce watering to once every 3-4 weeks. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning leaf tips.
Light
Nerine bowdenii thrives in full sun to partial shade.
Ideally, it should receive at least 6 hours of direct sunlight daily. When grown indoors, place it near a south or west-facing window. It can tolerate some shade but may produce fewer flowers if light levels are too low.
Soil
This plant prefers a well-draining soil mix, ideally composed of 50% potting soil and 50% sand or perlite.
The pH range should be between 6.0 and 7.0. Ensure the pot has drainage holes to prevent waterlogging, which can lead to root rot.
Humidity
Nerine bowdenii prefers moderate humidity levels around 40-60%.
To increase humidity, you can mist the plant or place a humidity tray filled with water and pebbles underneath the pot. Signs of humidity stress include browning leaf tips and slow growth.
Temperature
The ideal temperature range for Nerine bowdenii is between 60-75°F (15-24°C).
It is hardy in USDA zones 8-10. This plant can tolerate short periods of cooler temperatures but should be protected from frost and extreme heat.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 during the growing season, applying every 4-6 weeks.
In fall and winter, refrain from fertilizing as the plant enters dormancy. Signs of nutrient deficiency include stunted growth and yellowing leaves.
Pruning
Prune Nerine bowdenii after flowering by cutting back spent flower stalks to the base.
Use clean, sharp scissors or pruning shears to avoid damaging the plant. Deadheading spent blooms encourages more flowering and keeps the plant looking tidy.
Repotting
Repot Nerine bowdenii every 2-3 years or when the bulbs become crowded in their pot.
Signs it needs repotting include roots growing out of the drainage holes or stunted growth. Choose a pot that is 1-2 inches larger in diameter than the current one, and follow these steps: remove the plant from its pot, gently separate the bulbs, and replant them in fresh soil.
Propagation
Nerine bowdenii can be propagated through bulb division or seeds.
For bulb division, carefully dig up the bulbs in late summer when the foliage dies back, separate the bulbs, and replant them in well-draining soil. If propagating by seeds, sow them in a seed tray with a light soil mix in spring, keeping them moist until germination occurs.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering or nutrient deficiency.
How to fix it
Check the soil moisture and reduce watering if necessary. Consider fertilizing if the plant has not been fed in a while.
Root rot
Why it happens
Root rot occurs due to excessive moisture and poor drainage.
How to fix it
Ensure the pot has adequate drainage holes, and allow the soil to dry out between waterings. If root rot is present, remove the plant from the pot, trim away affected roots, and repot in fresh soil.
Browning leaf tips
Why it happens
This is often a sign of low humidity or under-watering.
How to fix it
Increase humidity by misting the plant or using a humidity tray, and ensure consistent watering practices.
Poor flowering
Why it happens
Insufficient light or nutrients can lead to reduced flowering.
How to fix it
Ensure the plant receives adequate sunlight (at least 6 hours of direct light) and fertilize during the growing season.
Pests (aphids, spider mites)
Why it happens
Pests can infest the plant, especially in dry conditions.
How to fix it
Inspect the plant regularly and treat infestations with insecticidal soap or neem oil.
Care through the year
Spring
In spring, resume regular watering and fertilizing as the plant begins to grow actively. Monitor for pests and ensure it receives plenty of sunlight.
Summer
During summer, continue to water every 1-2 weeks and provide full sun exposure. Deadhead spent flowers to encourage more blooms.
Fall
In fall, gradually reduce watering as the plant enters dormancy. Stop fertilizing and prepare for cooler temperatures.
Winter
In winter, water sparingly, only every 3-4 weeks. Protect the plant from frost and keep it in a cool, dry location.
Toxicity & Safety
Nerine bowdenii is considered toxic to pets (cats and dogs) and humans if ingested. The bulbs contain compounds that can cause gastrointestinal distress, including vomiting and diarrhea. Keep this plant out of reach of children and pets.
Good to know
How often should I water my Nerine bowdenii?
Water your Nerine bowdenii every 1-2 weeks during the growing season, allowing the top inch of soil to dry out between waterings.
Why are my Nerine bowdenii leaves turning yellow?
Yellow leaves can indicate over-watering or a nutrient deficiency. Check the soil moisture and consider fertilizing if it has been a while since the last feeding.
What light conditions are best for Nerine bowdenii?
Nerine bowdenii thrives in full sun to partial shade, ideally receiving at least 6 hours of direct sunlight daily for optimal growth and flowering.
When should I repot my Nerine bowdenii?
Repot your Nerine bowdenii every 2-3 years or when you notice roots growing out of the drainage holes. This ensures the plant has enough space and fresh soil.
How can I increase humidity for my Nerine bowdenii?
To increase humidity, mist the plant regularly or place a humidity tray filled with water and pebbles underneath the pot to create a more humid environment.
Is Nerine bowdenii toxic to pets?
Yes, Nerine bowdenii is toxic to pets and humans if ingested. The bulbs can cause gastrointestinal distress, so keep this plant out of reach of children and pets.
What should I do if my Nerine bowdenii is not flowering?
If your Nerine bowdenii is not flowering, ensure it receives adequate sunlight and nutrients. Fertilize during the growing season and check for any signs of stress.
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