Yellow daylily (Hemerocallis lilioasphodelus)

Also known as: Lemon lily, Lemon daylily

Hemerocallis lilioasphodelus, also known as the lemon daylily, is a perennial herb cherished for its fragrant yellow flowers. It is frequently planted in borders, mass plantings, and as a ground cover. With its dense, semi-evergreen foliage and early blooming period, it is a favorite among gardeners. This resilient plant is low-maintenance and adaptable, thriving in various soil conditions and adding a splash of color to gardens.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Yellow daylily

Lifespan

Perennial

Plant Type

Herb

Plant Height

50 cm to 1 m

Spread

1 m

Leaf Color

Green

Flower Size

10 cm

Flower Color

Yellow

Images of Yellow daylily

Quickly Identify Yellow daylily

The Yellow Daylily is identified by its bright yellow, trumpet-shaped flowers with a sweet fragrance that bloom atop tall stalks. Its leaves are long, linear, and grass-like, arranged in a basal rosette.

Scientific Classification of Yellow daylily

Phylum

Vascular plants

Class

Monocotyledons

Order

Asparagales

Family

Asphodel

Genus

Daylilies

Species

Yellow daylily

Planting and Growing of Yellow daylily

Care Difficulty

Easy

Watering Schedule

Every 3 days

Sunlight Requirements

Full sun

Sunshine Duration

6-12 hours

Ideal Temperature

60-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Ceramic

How to Water Yellow daylily?

For Hemerocallis lilioasphodelus, ensure the soil is consistently moist by watering with about 500 ml each time. The goal is to moisten the root zone thoroughly without leaving stagnant water. Aim for the soil to be as damp as a well-squeezed sponge.

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What Are the Sunlight Requirements for Yellow daylily?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6 to 8 hours

Partial to full sun is ideal, as it maximizes flowering potential and ensures strong, vigorous growth without overwhelming heat stress.

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What Is the Ideal Temperature Range for Yellow daylily?

Ideal Temperature: 60 ~ 75℉

Why is a temperature range of 60-75°F ideal for Hemerocallis lilioasphodelus? Maintaining this range encourages optimal growth and flowering. It mirrors the plant's natural environment and helps in sustaining its growth cycle effectively. Ensuring this range boosts the plant's metabolism, resulting in healthier and more vibrant blooms.

What Soil is Best for Yellow daylily?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

This plant thrives in soil that allows water to drain away quickly, preventing root rot. Ensuring well-drained soil provides the roots with necessary oxygen and encourages robust growth and vibrant blooms. Hemerocallis lilioasphodelus benefits from soil rich in organic matter. Nutrient-rich conditions enhance leaf health, support vigorous blooming, and improve overall plant vitality. While well-drained, the soil should still possess the ability to retain some moisture, sustaining the plant during dry spells. This balance aids in maintaining the plant’s hydration and resilience. More About Soil→

How to Fertilize Yellow daylily?

Fertilizer type: Balanced

For Hemerocallis lilioasphodelus, a balanced application of fertilizer that contains equal parts nitrogen, phosphorus, and potassium is recommended. A standard dose should be around 1/4 pound per 100 square feet, applied evenly around the base of the plant. More About Fertilizing Techniques→

How to Prune Yellow daylily?

Pruning Time: Spring, Summer

While removing dead or yellowing leaves is beneficial, avoid cutting healthy foliage during the growing season. The leaves are essential for photosynthesis and help feed the plant. Only remove dead or damaged leaves to keep the plant healthy. Prune during the early spring or immediately after flowering in summer to ensure that new growth is not hindered. Timing your pruning can greatly affect the flowering performance of Hemerocallis lilioasphodelus. More About Pruning Techniques→

How to Propagate Yellow daylily plant?

Propagate Time: Early spring, Late spring, Early autumn

Carefully dig around the base of the daylily with a garden fork, lifting the clump gently. Remove excess soil to clearly see the roots and rhizomes, ensuring you handle the plant gently to avoid stress.

Use a sharp knife or your hands to divide the plant into smaller sections, each with a healthy set of roots and foliage. It's vital to keep at least three fans per division to encourage successful growth.

Plant each division back in the ground at the same depth it was growing before, ensuring the soil is well-draining. Water the new plants thoroughly to help them establish in their new location.

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How to Repot Yellow daylily plant?

Repotting frequency: Every 2-3 years

You should consider repotting Hemerocallis lilioasphodelus when the roots start to overgrow the pot or when you notice stunted growth. Ideally, this should be done in spring before the flowering season begins to provide the plant with enough space and nutrients for optimal growth.

Select a pot that is only slightly larger than the current one, with good drainage holes. Using a slightly larger pot prevents excessive soil moisture, reducing the risk of root rot, and ensures that the plant focuses on growth rather than spreading out roots.

Use a well-draining loamy mix to support Hemerocallis lilioasphodelus. This type of soil balances moisture retention and drainage, providing the plant with a stable environment that promotes root health and prevents waterlogging.

Toxicity of Yellow daylily

Is Yellow daylily toxic to cat?

The yellow daylily carries an inherent level of toxicity that poses a risk to cats if ingested accidentally. This plant's flowers are recognized for their toxic properties, and consumption by a cat can result in physical distress consistent with poisoning. Therefore, it is crucial for cat owners to remain vigilant and to keep their feline friends away from the yellow daylily to mitigate the chances of ingestion. The symptoms of distress following a poisoning incident can differ among cats, and any signs of illness should be treated with utmost seriousness. Timely treatment at a veterinary clinic is vital to effectively manage the health of cats following potential exposure to the toxic components of the yellow daylily.

Is Yellow daylily toxic to dog?

The yellow daylily is recognized as harmful to dogs. If dogs ingest this plant, especially its flowers, they may suffer from poisoning due to its toxicity. Ingesting any parts of the yellow daylily can lead to symptoms in dogs such as vomiting, lethargy, or more serious health issues depending on the quantity consumed. It is vital for dog owners to keep a watchful eye on their pets and restrict their access to yellow daylilies. Should a dog consume any portion of this plant, it is imperative to seek immediate veterinary intervention to address any risks of poisoning.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

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