Wickwar Flame heather (Scotch heather) care

Light

Wickwar Flame heather needs sun on the leaves, not just bright ambient room light. Requires full sun for at least 6 hours daily to develop its best foliage colour. Shade causes leggy growth and poor winter colour intensity. 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 wickwar flame heather weekly during establishment, then as needed. 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. Water regularly for the first growing season to establish deep roots. Once established, moderately drought-tolerant; avoid waterlogging as it causes root rot. Do not allow to dry out completely during dry summers.

Soil and pot

Wickwar Flame heather grows best in acidic, free-draining sandy or peaty soil. Must have an acidic pH of 4.5–6.0. Heathers fail in alkaline or clay soils. Improve drainage with horticultural grit and add ericaceous compost. Never apply lime. 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

Wickwar Flame heather sits happiest at around Ambient outdoor humidity humidity and -20 to 25°C (-4 to 77°F). Tolerates low to moderate humidity typical of temperate gardens. Good air circulation reduces fungal issues. No supplemental humidity needed. If you keep the room above 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 wickwar flame heather sparingly. Apply a granular ericaceous (acid) fertiliser in early spring. Avoid high-nitrogen feeds that promote soft growth over flower and colour development. One application per year is sufficient. 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 wickwar flame heather in the Growli community. Each is annotated with the most common cause so you know where to start.

• Root rot / waterlogging — The most common killer of heathers. Ensure the planting site drains freely; raised beds or gritty soil amendments are essential in heavy clay gardens.
• Straggly, open growth — Caused by insufficient light or failure to trim. Clip over lightly with shears immediately after flowering each year to maintain a compact, bushy habit. Do not cut back into old woody stems.
• Yellowing foliage — Often indicates alkaline soil or iron chlorosis. Test soil pH and treat with sequestered iron if pH is above 6.0. Switch to ericaceous compost and avoid tap water in hard-water areas.

Propagation

Take semi-ripe cuttings 5–7 cm long in midsummer, strip lower leaves, and root in a mix of peat-free ericaceous compost and perlite. Maintain humidity with a plastic cover. Rooting takes 6–8 weeks. Division of established clumps in spring is also possible. 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

Wickwar Flame heather is pet-safe. Calluna vulgaris is not listed as toxic by the ASPCA. Heathers have no known toxic principle and are generally considered safe around pets and children, though ingestion of any plant material in large amounts may cause mild gastrointestinal upset. 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.

Wickwar Flame heather deep-dive guides

Every aspect of wickwar flame heather care, each with its own calibrated guide:

• Common wickwar flame heather problems & fixes
• Wickwar Flame heather watering schedule
• Wickwar Flame heather light requirements
• Best soil mix for wickwar flame heather
• Wickwar Flame heather fertilizing guide
• When to repot wickwar flame heather
• How to propagate wickwar flame heather
• How to prune wickwar flame heather
• What's eating my wickwar flame heather?
• Wickwar Flame heather growth rate & size
• Wickwar Flame heather cold hardiness
• Wickwar Flame heather temperature & humidity
• Is wickwar flame heather toxic to cats & dogs?
• Is wickwar flame heather toxic to cats?
• Is wickwar flame heather toxic to dogs?
• All 10 Calluna varieties
• Getting wickwar flame heather to bloom

Featured in these plant shortlists

Wickwar Flame heather qualifies for 10 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• 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.
• Best pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe flowering plants — Flowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• 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.
• Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Wickwar Flame heather is also known as Wickwar Flame heather, Scotch heather, and ling.

• Pelargonium fulgidum care — light, water and common problems
• Pelargonium 'Paton's Unique' care — light, water and common problems
• Pelargonium 'Ardens' care — light, water and common problems
• All 8452 plant care guides in the Growli library