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Plant care

Daylily 'Siloam Virginia Henson' (Virginia Henson daylily) care

Hemerocallis 'Siloam Virginia Henson'

Also called Virginia Henson daylily.

RHS H6USDA 3-9Toxic to petsIndoor 45-55 cm tall in bloom

Watering rhythm

7-10days

Every 7-10 days during active growth, or when the top 5 cm of soil is dry

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Light

Direct sun (at least 4-6 hours)

Soil

Fertile, well-draining loam or amended garden soil

Humidity

40-70%

Temp

5-35°C

Pet safety

Toxic to pets

Mature size

45-55 cm tall in bloom

Care at a glance

Light

Daylily 'Siloam Virginia Henson' needs sun on the leaves, not just bright ambient room light. Full sun (6+ hours daily) gives the best flower count and stem strength. Light afternoon shade is acceptable in USDA zones 8-9 to prevent petal bleaching in intense summer heat. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water daylily 'siloam virginia henson' every 7-10 days during active growth, or when the top 5 cm of soil is dry. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Deep, infrequent watering is preferable to shallow, frequent irrigation. Water at soil level to keep foliage dry and reduce disease risk. Reduce watering in autumn as the plant enters dormancy.

Soil and pot

Daylily 'Siloam Virginia Henson' grows best in fertile, well-draining loam or amended garden soil. Performs best in slightly acidic to neutral soil (pH 6.0-6.5). Incorporate organic matter at planting to improve moisture retention and nutrient availability. Avoid heavy, poorly draining soils. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Daylily 'Siloam Virginia Henson' sits happiest at around 40-70% humidity and 5-35°C (40-95°F). Tolerates typical outdoor humidity across temperate regions without any special requirements. Good air circulation reduces the risk of fungal leaf diseases. If you keep the room above 5 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed daylily 'siloam virginia henson' sparingly. Apply a balanced granular fertiliser in early spring and again lightly after the main bloom period. Avoid excessive nitrogen, which promotes lush leafy growth at the expense of flower production. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on daylily 'siloam virginia henson' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Aphids — Common on buds and soft growth in spring; treat with insecticidal soap or encourage natural predators such as ladybirds.
  • Daylily rust — Fungal disease producing orange spore masses on foliage; promptly remove and destroy affected leaves and consider a registered fungicide.
  • Thrips — Cause streaking and distortion of petals; apply neem oil or spinosad-based sprays early in the season.
  • Botrytis (grey mould) — Affects buds and spent blooms in cool, wet conditions; remove spent flowers promptly and ensure good airflow.
  • Crown rot — Caused by overwatering or poor drainage; lift affected crowns, trim rotted tissue and replant in improved soil.

Companion plants

Daylily 'Siloam Virginia Henson' pairs well with Salvia nemorosa, Geranium pratense, Achillea 'Moonshine', and Stachys byzantina. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Lift and divide clumps every 3-5 years in spring or autumn; separate fan divisions and replant at the original depth. Named cultivars must be propagated vegetatively to retain their characteristics. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Daylily 'Siloam Virginia Henson' is toxic to pets. Hemerocallis (daylilies) are listed by the ASPCA as toxic to cats; ingestion of any part — including pollen — can cause acute kidney failure and is potentially fatal. Mildly toxic to dogs and horses, causing gastrointestinal disturbance. All Hemerocallis cultivars should be kept out of reach of cats. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Daylily 'Siloam Virginia Henson' care — frequently asked questions

What is the common name for Hemerocallis 'Siloam Virginia Henson'?

Hemerocallis 'Siloam Virginia Henson' is most commonly called Daylily 'Siloam Virginia Henson', but it is also known as Virginia Henson daylily. The names refer to the same species, so care instructions for Daylily 'Siloam Virginia Henson' apply identically to anything sold as Virginia Henson daylily.

How much light does daylily 'siloam virginia henson' need?

Daylily 'Siloam Virginia Henson' grows best in direct sun (at least 4-6 hours). Full sun (6+ hours daily) gives the best flower count and stem strength. Light afternoon shade is acceptable in USDA zones 8-9 to prevent petal bleaching in intense summer heat.

How often should I water daylily 'siloam virginia henson'?

Water daylily 'siloam virginia henson' every 7-10 days during active growth, or when the top 5 cm of soil is dry. Deep, infrequent watering is preferable to shallow, frequent irrigation. Water at soil level to keep foliage dry and reduce disease risk. Reduce watering in autumn as the plant enters dormancy. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is daylily 'siloam virginia henson' toxic to cats and dogs?

Daylily 'Siloam Virginia Henson' is toxic to pets. Hemerocallis (daylilies) are listed by the ASPCA as toxic to cats; ingestion of any part — including pollen — can cause acute kidney failure and is potentially fatal. Mildly toxic to dogs and horses, causing gastrointestinal disturbance. All Hemerocallis cultivars should be kept out of reach of cats.

What USDA hardiness zone does daylily 'siloam virginia henson' grow in?

Daylily 'Siloam Virginia Henson' is rated for USDA zone 3-9 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Daylily 'Siloam Virginia Henson' deep-dive guides

Every aspect of daylily 'siloam virginia henson' care, each with its own calibrated guide:

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Related guides

Daylily 'Siloam Virginia Henson' is also commonly called Virginia Henson daylily.