Lemon Daylily Plant Care
Hemerocallis citrina Baroni
Updated · Sources · How we source care data
Hemerocallis citrina, commonly known as citron daylily and long yellow daylily, is a species of herbaceous perennial plant in the family Asphodelaceae.
Every 7–10 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Lemon Daylily?
Water Lemon Daylily every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–85°F (16–29°C) and 40–70% humidity. Fertilize it every 6 months during the growing season. It is reported as toxic to pets, so keep it out of reach of pets.
What Is the Lemon Daylily?
Lemon Daylily (Hemerocallis citrina) belongs to the Asphodelaceae family within the Hemerocallis genus. Lemon Daylily is also known as Citron Daylily.
Lemon Daylily displays a clumping perennial growth habit, reaching up to 2 ft tall with a spread of approximately 1.5 ft. Lemon Daylily produces large, trumpet-shaped flowers in various colors.
Leaf size: approximately 18 inches.
How Often Should You Water a Lemon Daylily?
Hemerocallis citrina requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Lemon Daylily Need?
Lemon Daylily thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Lemon Daylily Prefer?
Hemerocallis citrina grows best at temperatures of 60–85°F. Lemon Daylily prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Lemon Daylily?
Well-draining, fertile soil with organic matter. Good drainage is essential for Lemon Daylily to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Lemon Daylily?
Feed Lemon Daylily every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Lemon Daylily?
Divide and repot every 3-5 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Lemon Daylily?
Lemon Daylily can be propagated through division, seeds. Similar propagation techniques also apply to daylily plant care, which shares the same genus.
Is the Lemon Daylily Toxic to Pets and Children?
Toxic (caution)
Reported as toxic in our plant data. Not verified by the ASPCA.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Lemon Daylily?
Lemon Daylily is susceptible to aphids, spider mites, thrips. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Lemon Daylily Need?
Lemon Daylily grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Lemon Daylily as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Lemon Daylily is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Hemerocallis genus — compare its care with other Hemerocallis species on PlantoScan.
Hemerocallis is part of the Asphodelaceae plant family — browse all Asphodelaceae genera and species.
Lemon Daylily thrives in bright light and direct sun — see other bright-light plants.
More Hemerocallis Species
Other Hemerocallis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Hemerocallis citrina Baroni, family Asphodelaceae (first published in Nuovo Giorn. Bot. Ital. , n.s., 4: 305 (1897)) — World Flora Online record, IPNI name record.
- Pet toxicity: Lemon Daylily is reported as toxic to pets in our plant data (not verified by the ASPCA), so treat it with caution. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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