Heuchera 'Plum Pudding' (Coral Bells 'Plum Pudding') care

Light

Picture the indirect light an east-facing window gives mid-morning — that's the brightness heuchera 'plum pudding' grows fastest in. Partial shade to morning sun is optimal; the silver overlay on the purple foliage is most pronounced in moderate light. Afternoon shade is important in summer to prevent bleaching and leaf scorch. Tolerates more shade than many Heuchera cultivars. You'll know it's right when new leaves come out the same size and colour as the established ones. Smaller, paler new leaves = move closer to the window.

Watering

Aim for when the top 2-3 cm of soil is dry, roughly every 6-9 days in summer for heuchera 'plum pudding', 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. Once established, 'Plum Pudding' shows reasonable drought tolerance, but consistent moisture produces better foliage. Water deeply and infrequently rather than little and often. Reduce watering in winter when dormant.

Soil and pot

Heuchera 'Plum Pudding' grows best in well-draining, moderately fertile loam or amended soil. pH 6.0-7.0. Poor drainage is the biggest risk; avoid heavy clay unless heavily amended with horticultural grit. Slightly lean soil can enhance the silver metallic colouration. Container mixes should include 20-25% perlite. 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

Heuchera 'Plum Pudding' sits happiest at around 40-60% humidity and 5-25°C (41-77°F). Average garden or indoor humidity is perfectly adequate. The plant is not humidity-sensitive but benefits from good airflow to prevent fungal issues. Avoid waterlogging and crown wetness. 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 heuchera 'plum pudding' sparingly. One application of slow-release balanced fertiliser in early spring is usually sufficient for established plants in good soil. In containers, apply a dilute balanced liquid feed monthly from April to August to compensate for nutrient leaching. 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 heuchera 'plum pudding' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Crown rot — Crown sits proud of the soil to prevent rot; excessive soil coverage causes fungal infections that kill the plant quickly.
• Vine weevil — Adults notch leaf margins; larvae consume roots in late summer. Apply nematodes or imidacloprid drench in late August.
• Leaf burn — Crispy leaf edges in hot, dry, sunny conditions; provide afternoon shade and mulch.
• Root lifting — Frost heaving in winter can expose roots; firm back in and top-dress with compost.
• Rust — Orange spots on undersides in wet, warm weather; remove affected leaves and avoid overhead watering.

Companion plants

Heuchera 'Plum Pudding' pairs well with Hostas, Astilbe, Brunnera, and Ferns. 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

Best propagated by division in spring or autumn; divide every 3-5 years to prevent woodiness. Cut older woody crowns apart with a clean sharp knife, ensuring each piece has roots and shoots, and replant immediately. 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

Heuchera 'Plum Pudding' is mildly toxic to pets. Heuchera is not listed as toxic by the ASPCA, but mild gastrointestinal irritation is possible if ingested by pets or small children. As a precaution, classify as mildly toxic and keep away from pets that chew plants. 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.

Heuchera 'Plum Pudding' deep-dive guides

Every aspect of heuchera 'plum pudding' care, each with its own calibrated guide:

• Common heuchera 'plum pudding' problems & fixes
• Heuchera 'Plum Pudding' watering schedule
• Heuchera 'Plum Pudding' light requirements
• Best soil mix for heuchera 'plum pudding'
• Heuchera 'Plum Pudding' fertilizing guide
• When to repot heuchera 'plum pudding'
• How to propagate heuchera 'plum pudding'
• How to prune heuchera 'plum pudding'
• What's eating my heuchera 'plum pudding'?
• Heuchera 'Plum Pudding' growth rate & size
• Heuchera 'Plum Pudding' cold hardiness
• Heuchera 'Plum Pudding' temperature & humidity
• Is heuchera 'plum pudding' toxic to cats & dogs?
• Is heuchera 'plum pudding' toxic to cats?
• Is heuchera 'plum pudding' toxic to dogs?
• All 56 Heuchera varieties
• Getting heuchera 'plum pudding' to bloom

Featured in these plant shortlists

Heuchera 'Plum Pudding' qualifies for 7 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best plants for cold, dark rooms — Houseplants that cope with BOTH low light and a cool, unheated room — the hardest indoor spot to fill. Every pick tolerates a low of about 10°C and shade.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best houseplants for beginners — Forgiving of irregular light and watering — the houseplants least likely to die in a new plant parent’s first season.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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

Related guides

Heuchera 'Plum Pudding' is also commonly called Coral Bells 'Plum Pudding' or Alumroot 'Plum Pudding'.

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