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Plant care

Spiraea 'Gold Flame' (Gold Flame spirea) care

Spiraea japonica 'Gold Flame'

Also called Gold Flame spirea, Japanese spirea Gold Flame.

RHS H6USDA 4-9Mildly toxic to petsIndoor 0.6-0.9 m (2-3 ft) tall and 0.9-1.2 m (3-4 ft) wide.

Watering rhythm

Direct sun (at least 4-6 hours)

When the top 3-5 cm of soil is dry, about once per week

Light

Direct sun (at least 4-6 hours)

Soil

Moist, well-drained loam

Humidity

Ambient outdoor

Temp

-34 to 30°C

Pet safety

Mildly toxic to pets

Mature size

0.6-0.9 m (2-3 ft) tall and 0.9-1.2 m (3-4 ft) wide.

Care at a glance

Light

Spiraea 'Gold Flame' needs sun on the leaves, not just bright ambient room light. Full sun for the brightest gold and orange foliage tones and best flowering; at least 6 hours of direct sun. In shade leaves turn greener and colour is muted. 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 spiraea 'gold flame' when the top 3-5 cm of soil is dry, about once per week. 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. Keep moist while establishing the first season; thereafter it is fairly drought-tolerant. Provide about 2.5 cm (1 inch) of water weekly during dry spells. Avoid waterlogging.

Soil and pot

Spiraea 'Gold Flame' grows best in moist, well-drained loam. Adaptable to most soils with reasonable drainage; tolerates clay and a range of pH but prefers fertile, evenly moist loam. Avoid permanently wet ground. 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

Spiraea 'Gold Flame' sits happiest at around Ambient outdoor humidity and -34 to 30°C (-30 to 86°F). A hardy garden shrub with no special humidity needs; performs well in normal temperate seasonal outdoor conditions. 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 spiraea 'gold flame' sparingly. A single feed of balanced slow-release fertiliser in early spring is enough. Spireas are undemanding; over-feeding produces lush but weaker growth. 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 spiraea 'gold flame' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Faded foliage colourGold and orange tones wash out in shade. Plant in full sun to keep the bright foliage display.
  • Leggy or untidy habitWithout pruning it grows open and woody. Shear by one-third to one-half in late winter/early spring to keep it dense; deadhead spent flowers for a second flush.
  • AphidsNew growth can attract aphids in spring. Hose them off or use insecticidal soap; ladybirds usually control light infestations.
  • Powdery mildewWhite coating on leaves in humid, crowded sites. Improve airflow and avoid overhead watering.

Propagation

Easily propagated by softwood cuttings in early summer or semi-ripe cuttings in mid-to-late summer; mature clumps can also be divided in early spring. 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

Spiraea 'Gold Flame' is mildly toxic to pets. Spiraea is not individually listed by the ASPCA on either its toxic or non-toxic plant lists, so a definitive pet-safety status cannot be confirmed; treat with caution and verify with a vet. As an unlisted ornamental, ingestion of foliage or flowers may cause mild gastrointestinal upset (vomiting, diarrhoea) in cats and dogs, so discourage chewing. 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.

Spiraea 'Gold Flame' care — frequently asked questions

What is the common name for Spiraea japonica 'Gold Flame'?

Spiraea japonica 'Gold Flame' is most commonly called Spiraea 'Gold Flame', but it is also known as Gold Flame spirea, Japanese spirea Gold Flame. The names refer to the same species, so care instructions for Spiraea 'Gold Flame' apply identically to anything sold as Gold Flame spirea.

How much light does spiraea 'gold flame' need?

Spiraea 'Gold Flame' grows best in direct sun (at least 4-6 hours). Full sun for the brightest gold and orange foliage tones and best flowering; at least 6 hours of direct sun. In shade leaves turn greener and colour is muted.

How often should I water spiraea 'gold flame'?

Water spiraea 'gold flame' when the top 3-5 cm of soil is dry, about once per week. Keep moist while establishing the first season; thereafter it is fairly drought-tolerant. Provide about 2.5 cm (1 inch) of water weekly during dry spells. Avoid waterlogging. 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 spiraea 'gold flame' toxic to cats and dogs?

Spiraea 'Gold Flame' is mildly toxic to pets. Spiraea is not individually listed by the ASPCA on either its toxic or non-toxic plant lists, so a definitive pet-safety status cannot be confirmed; treat with caution and verify with a vet. As an unlisted ornamental, ingestion of foliage or flowers may cause mild gastrointestinal upset (vomiting, diarrhoea) in cats and dogs, so discourage chewing.

What USDA hardiness zone does spiraea 'gold flame' grow in?

Spiraea 'Gold Flame' is rated for USDA zone 4-9 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Spiraea 'Gold Flame' deep-dive guides

Every aspect of spiraea 'gold flame' care, each with its own calibrated guide:

Featured in these plant shortlists

Spiraea 'Gold Flame' qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Spiraea 'Gold Flame' is also commonly called Gold Flame spirea or Japanese spirea Gold Flame.