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Holly's Homestead — Medicinal

Lemon Balm

Melissa officinalis · Lamiaceae
DIFFICULTY Easy (self-seeds readily)
TYPE Herbaceous perennial
MATURITY Usable from 6–8 weeks
Sun
Full sun to part shade
Water
Moderate, regular
Soil pH
6.0–7.5
Spacing
30–45cm
Depth
as per pot

01Self-seeds, doesn't run

Unlike its mint-family relatives, Lemon Balm doesn't spread by runners — but it self-seeds freely, and a few unpicked flower heads can turn into a patch. The lemon-scented leaves are traditionally dried for tea.

02Planting

Method
Plant a nursery seedling, or strike a cutting in water — roots easily.
Soil
Average, well-drained soil; not fussy.
Timing
Plant any time in mild weather; establishes quickly.

Planting timing varies significantly by Australian climate zone. Set your zone above (or use the Find My Climate Zone tool) for guidance tailored to your own area.

03Growing care

  • Water moderately; tolerates a bit of dryness once established.
  • Cut back hard periodically to keep growth fresh and bushy.
  • Deadhead spent flowers before they set seed, to limit self-sowing.
  • Divide congested clumps every couple of years to keep them vigorous.

04Problems

  • Rust — orange spotting on leaves; remove affected stems, improve airflow.
  • Self-seeding beyond the bed — the main risk; deadhead before seed sets.
  • Powdery mildew — humid, crowded conditions; thin out growth.
  • Aphids — occasional cluster on tips; hose off.

05Harvest & storage

Signs
Usable once the plant is established, virtually year-round in mild climates.
Method
Snip stems as needed; regular picking keeps it bushy.
Curing
Air-dry hanging in small bunches, or freeze in ice cube trays with water.
Storage
Fresh in the fridge about a week; dried, airtight for months.
Preserving
See Dehydrating for ways to keep a harvest surplus.

06Companions & rotation

Plant nearby
BrassicasTomato
Avoid nearby
Few restrictions
Rotation note
Not applicable — long-lived perennial clump.
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Lemon Balm is an easy plant to grow, needing full sun to part shade with moderate, regular watering.

→ Read the full deep-dive guide for Lemon Balm — more detail, FAQs, and related guides.

For general reference, see Sustainable Gardening Australia.