How to grow Sage in New Zealand
Garden sage has soft, silvery grey-green leaves with a warm, earthy flavour that suits pork, poultry, stuffing and brown butter. It is a tough, drought-tolerant perennial for a sunny, free-draining spot, and its blue-purple flowers bring bees to the vegetable garden. Plants last three or four years before they get woody and need replacing.
📖 Our full guide: How to Grow Sage in New Zealand
At a glance
When to sow by region
| Region | When to sow | Regional note |
|---|---|---|
| Northland | August to October, January to April | |
| Auckland | August to October, January to April | |
| Waikato & Bay of Plenty | August to October, January to April | |
| Central North Island | August to October, January to April | |
| Wellington & Lower North Island | August to October, January to April | |
| Nelson & Marlborough | August to October, January to April | |
| Canterbury | August to April | Plant Aug to Apr so roots establish before the hard frosts. |
| Otago & Southland | September to April | Plant Sep to Apr so roots establish before the hard frosts. |
| Central Otago | September to March | Plant Sep to Mar so roots establish before the hard frosts. |
Where to plant
Plant sage in full sun with some shelter from cold winds, in free-draining soil enriched with compost. On heavy clay, plant on a raised mound with gypsum in the hole, as sage dislikes wet roots. It makes a good border around vegetable beds, where its flowers draw bees.
- Northland to Wellington and Nelson: plant at any time, though September to February gives the best start. Sage grows year round in the warm north but slows in winter.
- Canterbury: plant from August to April so roots establish before the hard frosts.
- Otago, Southland and Central Otago: plant from September to April (to March in Central Otago) so the roots establish before the hard frosts.
Choosing a variety
- Common sage is the standard culinary type.
- Purple, golden and variegated forms are equally good to eat and make colourful edging plants.
- White sage is a different species grown for its aromatic leaves.
How to plant
- Sow seed in spring, lightly covered with seed-raising mix, or buy a plant.
- For plants, dig a hole twice as wide and deep as the root ball, mix compost into the soil, and set the plant at the same level it sat in the pot.
- Space plants about 50 cm apart.
- Water in well.
Watering and feeding
Water when the soil is dry. Established sage tolerates dry conditions, though a deep drink in summer keeps it looking fresh. Overwatering and poor drainage cause more problems than drought.
Feed lightly in spring; sage does not need rich soil.
Pruning and care through the year
- Pinch out flowers to keep the plant leafy, or let it flower for the bees and then prune lightly afterwards.
- Do not cut back into the old woody stems, which rarely reshoot.
- Replace plants every three or four years, once they become sparse and woody.
Harvesting
Pick leaves as needed through the year with scissors, taking a few from each stem rather than stripping one. Sage dries well: hang small bunches in an airy place out of the sun. The flowers are edible too and look pretty in salads.
Growing in pots
Sage grows well in a pot at least 30 cm wide in full sun, in a container mix. Water when the mix is dry and do not let it sit in water.
Companion planting
Sage's flowers bring bees to the vegetable garden, and it likes the same dry, sunny conditions as other Mediterranean herbs.
Good companions
- Rosemary Shares the same sun and free-draining soil.
- Brassicas A traditional pairing; sage edging a brassica bed brings in bees and helpful insects.
- Carrot A traditional companion that fits along the bed edge.
Keep apart
Avoid planting these close to sage.
- Cucumber Cucumbers want rich, moist soil and lots of water, while sage prefers it dry and lean.
Pests and diseases
Sage has few problems in a sunny, well-drained spot.
Pests to watch for
- Spider mite Fine mottling on leaves and fine webbing in hot, dry weather.
- Slugs and snails (slugs and snails) Holes in young leaves of new plants.
Diseases to watch for
- Powdery mildew A white coating on leaves in humid, crowded spots.
- Root rot Wilting and collapse in wet, heavy soil.
Common questions
When is the best time to plant sage in New Zealand?
Sage can be planted all year, but it does best when planted from September to February. In the south, plant between spring and early autumn so it roots in before the hard frosts.
Should I let my sage flower?
You can. Pinching flowers off keeps the plant leafier, but the flowers are pretty, edible and loved by bees. If it flowers, give it a light prune afterwards.
Why has my sage gone woody?
Sage naturally becomes woody and sparse with age. Light pruning after flowering slows this, but plants usually need replacing every three or four years.
Can I grow sage in a pot?
Yes, in a pot at least 30 cm wide with free-draining mix, in full sun.
How do I dry sage?
Pick stems in dry weather, tie them in small bunches and hang them in an airy place out of direct sun. When crisp, strip the leaves into an airtight jar.
Sources we checked: Yates NZ: How to grow sage; Kings Plant Barn: Sage grow well guide.