All Gold Lemon Balm (Golden Lemon Balm) care

Light

In the wild all gold lemon balm grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Thrives in morning sun with afternoon shade. Full midday sun bleaches and scorches the golden foliage, especially in USDA zones 7+. Dappled light through tree canopy produces the richest colour without leaf burn. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for every 3–5 days; keep evenly moist for all gold lemon balm, 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. Needs consistent moisture, particularly in containers where it dries out faster. Water when the top 2 cm of soil is dry. Reduce frequency in cooler months. Avoid overhead watering in humid climates to limit disease.

Soil and pot

All Gold Lemon Balm grows best in moderately fertile, well-draining loam. Prefers a soil pH of 6.0–7.5. Grows well in average garden soil; avoid very rich mixes that encourage vigorous all-green regrowth at the expense of the gold colouring. Good drainage is critical. 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

All Gold Lemon Balm sits happiest at around 40–65% humidity and 5–25°C (41–77°F). Suits average garden and indoor humidity. In very humid climates or when overcrowded, thin the clump to maintain airflow and prevent fungal issues. If you keep the room above 5–25°C 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 all gold lemon balm sparingly. Apply a half-strength balanced fertiliser once in spring. Avoid high-nitrogen feeds, which cause reversion to green and excessive leafy growth that dilutes aroma. 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 all gold lemon balm in the Growli community. Each is annotated with the most common cause so you know where to start.

• Colour bleaching in full sun — Prolonged direct sun causes the gold foliage to bleach pale cream or develop brown scorch patches. Move to a spot with afternoon shade, or provide a shade cloth during peak summer.
• Reversion to green — Strong-growing all-green shoots may arise, especially after hard pruning or in fertile soil. Remove reverted growth at the base immediately to preserve the 'All Gold' appearance.
• Powdery mildew — Low airflow and dry soil conditions in late summer promote powdery mildew. Cut plants back by half after flowering and improve spacing. Avoid wetting foliage when watering.

Propagation

Propagate vegetatively by division in spring or by softwood cuttings in late spring to preserve the all-gold colouring. Seed-raised plants will not come true for the uniform gold colour. 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

All Gold Lemon Balm is pet-safe. Melissa officinalis is listed by the ASPCA as non-toxic to dogs and cats. The 'All Gold' cultivar is a selection of the same species and carries the same safety profile. Safe for households with pets. 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.

All Gold Lemon Balm deep-dive guides

Every aspect of all gold lemon balm care, each with its own calibrated guide:

• Common all gold lemon balm problems & fixes
• All Gold Lemon Balm watering schedule
• All Gold Lemon Balm light requirements
• Best soil mix for all gold lemon balm
• All Gold Lemon Balm fertilizing guide
• When to repot all gold lemon balm
• How to propagate all gold lemon balm
• How to prune all gold lemon balm
• What's eating my all gold lemon balm?
• All Gold Lemon Balm growth rate & size
• All Gold Lemon Balm cold hardiness
• All Gold Lemon Balm temperature & humidity
• Is all gold lemon balm toxic to cats & dogs?
• Is all gold lemon balm toxic to cats?
• Is all gold lemon balm toxic to dogs?
• All 7 Melissa varieties

Featured in these plant shortlists

All Gold Lemon Balm qualifies for 1 curated Growli shortlist — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best fragrant houseplants — Indoor plants with scented flowers or aromatic foliage — greenery you can smell, selected from our care library.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

All Gold Lemon Balm is also commonly called All Gold Lemon Balm or Golden Lemon Balm.

• Genovese Basil care — light, water and common problems
• Thai Basil care — light, water and common problems
• Holy Basil (Tulsi) care — light, water and common problems
• All 8452 plant care guides in the Growli library