Daylily 'Siloam Double Classic' (Double Classic daylily) care

Light

Most houseplants will scorch where daylily 'siloam double classic' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Performs best in full sun (at least 6 hours of direct sunlight per day). Will tolerate light afternoon shade in very hot climates, but flowering may be reduced. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for roughly every 7-10 days during the growing season, or when the top 5 cm of soil is dry for daylily 'siloam double classic', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water deeply at the base to encourage deep root development. Established clumps are moderately drought-tolerant but appreciate consistent moisture during bud formation and bloom.

Soil and pot

Daylily 'Siloam Double Classic' grows best in fertile, well-draining loam or amended garden soil. Tolerates a range of soil types including clay and sandy soils, but performs best in humus-rich, moderately moist ground. Avoid waterlogged conditions which can lead to crown rot. 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 Double Classic' sits happiest at around 40-70% humidity and 5-35°C (40-95°F). Adapts well to typical outdoor humidity levels across most temperate climates. No special humidity requirements; good air circulation helps prevent fungal issues. 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 double classic' sparingly. Apply a balanced slow-release granular fertiliser (e.g. 10-10-10) in early spring as new growth emerges. A second light feed after the first flush of blooms encourages repeat flowering; avoid high-nitrogen feeds that promote foliage over flowers. 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 double classic' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Aphids — Clusters of aphids on buds and new growth in spring; knock off with a strong water jet or apply insecticidal soap.
• Daylily rust — Orange pustules on leaves caused by Phakopsora hemerocallidis; remove affected foliage and apply a fungicide approved for rust if severe.
• Thrips — Cause streaked or distorted petals; most problematic in warm dry spells. Neem oil or spinosad sprays help manage infestations.
• Crown rot — Results from waterlogged soil; ensure excellent drainage and avoid overhead watering. Lift and divide overcrowded clumps every 3-4 years.
• Slug damage — Slugs feed on emerging foliage in spring; use iron phosphate pellets or place grit around the crown as a deterrent.

Companion plants

Daylily 'Siloam Double Classic' pairs well with Salvia nemorosa, Achillea millefolium, Echinacea purpurea, and Ornamental grasses. 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

Divide established clumps in early spring or autumn every 3-5 years to maintain vigour; replant fan divisions with the crown just at or slightly below soil level. Can also be grown from seed, though named cultivars will not come true. 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 Double Classic' is toxic to pets. Hemerocallis (daylilies) are listed by the ASPCA as toxic to cats and can cause acute kidney failure — even small ingestions of petals, leaves, or pollen can be fatal. Considered mildly toxic to dogs and horses (gastrointestinal upset). Keep cats strictly away from all plant parts. 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 Double Classic' deep-dive guides

Every aspect of daylily 'siloam double classic' care, each with its own calibrated guide:

• Common daylily 'siloam double classic' problems & fixes
• Daylily 'Siloam Double Classic' watering schedule
• Daylily 'Siloam Double Classic' light requirements
• Best soil mix for daylily 'siloam double classic'
• Daylily 'Siloam Double Classic' fertilizing guide
• When to repot daylily 'siloam double classic'
• How to propagate daylily 'siloam double classic'
• How to prune daylily 'siloam double classic'
• What's eating my daylily 'siloam double classic'?
• Daylily 'Siloam Double Classic' growth rate & size
• Daylily 'Siloam Double Classic' cold hardiness
• Daylily 'Siloam Double Classic' temperature & humidity
• Is daylily 'siloam double classic' toxic to cats & dogs?
• Is daylily 'siloam double classic' toxic to cats?
• Is daylily 'siloam double classic' toxic to dogs?
• All 46 Hemerocallis varieties
• Getting daylily 'siloam double classic' to bloom

Featured in these plant shortlists

Daylily 'Siloam Double Classic' qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

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Daylily 'Siloam Double Classic' is also commonly called Double Classic daylily.

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