How to grow Grape in New Zealand
A grapevine on a sunny pergola or fence gives summer shade, autumn colour and bunches of table grapes for decades. Vines start fruiting two or three years after planting, and with a strong support, a hard winter prune and a net before the fruit colours, they are easier to grow than many people expect. In humid northern gardens the secret is choosing a disease-tolerant table grape such as Albany Surprise.
📖 Our full guide: How to Grow Grape in New Zealand
At a glance
When to plant by region
| Region | When to plant | Regional note |
|---|---|---|
| Northland | June to August | |
| Auckland | June to August | |
| Waikato & Bay of Plenty | June to August | |
| Central North Island | June to August | |
| Wellington & Lower North Island | June to August | |
| Nelson & Marlborough | June to August | |
| Canterbury | June to August | |
| Otago & Southland | June to August | |
| Central Otago | June to August |
Where to plant
Grapes give their best fruit with long, warm summers, dry autumns and cool winters. Plant in full sun, against a sunny north-facing wall, fence or pergola, with good air circulation and some shelter from strong and cold winds. They tolerate some salt wind. Dormant vines handle winter frost, but spring frosts can kill new growth, so avoid frost pockets.
Free-draining soil is essential, as waterlogging kills vines. Grapes prefer a deep, light, slightly acid loam enriched with compost; on clay, add gypsum. Wet, humid summers raise disease risk and rain at ripening can rot the fruit, which is why variety choice and airflow matter so much in Northland, Auckland and Waikato.
- Northland, Auckland, Waikato and Bay of Plenty: choose disease-tolerant table grapes such as Albany Surprise or Iona, keep the canopy open, and expect to manage mildew in humid summers.
- Nelson and Marlborough, Canterbury and Central Otago: drier summers and autumns suit grapes well. Plant where spring frosts drain away.
- Wellington, Otago and Southland, and the central North Island: use the warmest, most sheltered sunny wall, and choose an early-ripening variety so fruit ripens before autumn weather turns.
Choosing a variety
| Variety | Notes |
|---|---|
| Albany Surprise | The classic New Zealand backyard black table grape. Very sweet, not seedless, and with good disease resistance, so the safest choice for humid areas |
| Iona | A very hardy grape that suits coastal areas and reliably bears sweet, pink-skinned fruit |
| Niagara | A popular sweet, juicy green grape with large bunches, early in the season |
| Buffalo | An early, sweet, spicy black grape and a heavy cropper, but prone to powdery mildew, so it needs summer pruning for airflow |
| Schuyler | Jet-black, medium-sized bunches with good flavour and sweetness |
| Flame Seedless | A sweet seedless red grape, best in warmer, drier districts |
Grafted vines live longer and add disease resistance, though grapes also grow easily from cuttings.
How to plant
- Plant dormant vines in winter, or in late autumn in mild areas and early spring where winters are harsh.
- Put up the support first: a pergola, sturdy fence or wires on strong posts.
- Dig compost into the soil, then dig a hole about 30 cm wide and deep, or twice as wide as the root ball. Water the vine well before planting.
- Plant at the same depth as before. On a grafted vine keep the graft union about 10 cm above the soil.
- Water in, mulch around the base, keeping mulch off the trunk, and prune the vine back to two or three buds.
- As it grows, choose the strongest shoot as the permanent trunk, tie it to a stake and rub off the others. When it reaches the wire or pergola top, bend it along the support and tie it.
Watering and feeding
Water deeply once or twice a week while vines establish, and through spring and summer, especially during flowering and fruit set. Established vines are drought tolerant, but steady moisture gives better grapes. Too much water as fruit ripens can split the berries, and waterlogged soil kills vines.
Grapes need little fertiliser. Feed in early spring with blood and bone or a slow-release fertiliser rich in potassium, and mulch with compost before summer to hold moisture.
Pruning and care through the year
- Prune hard in winter while the vine is dormant. Grapes fruit on shoots growing from last season's canes, so cut the side shoots back to a few buds on the main arms, keeping about ten well-placed buds, and remove dead or damaged wood.
- In spring, tie new shoots along the wires or pergola.
- In summer, once fruit has set, pinch the shoot tips two leaves beyond the bunch and thin crowded leaves so air and sun reach the fruit. This is the best defence against mildew and botrytis.
- A copper spray in winter and from bud burst helps reduce powdery and downy mildew in humid areas.
- Net the vine before the fruit colours, using mesh open enough to let sun in.
Harvesting
Table grapes ripen from late summer through autumn, depending on variety and district. They do not ripen or sweeten after picking, and colour alone is not a reliable guide, so taste a few before you cut. Harvest whole bunches with secateurs once the berries are full and sweet.
Handle bunches as little as possible. Grapes are best eaten within two or three days; keep the rest in an airtight container in the fridge, or freeze them whole as a snack.
Growing in pots
Grapes grow in a large pot at least 60 cm wide, such as a half wine barrel, as long as there is a strong support to climb. Use a fruit or citrus potting mix, grow just one or two main leaders to keep the vine compact, water deeply once or twice a week and more in hot weather, and feed in spring.
Companion planting
Vines are long lived and need airflow around them, so keep underplantings low and away from the trunk.
Good companions
- Clover A low groundcover that feeds the soil without crowding the vine.
- Hyssop A low, bee-friendly herb that likes the same sunny, free-draining spot.
- Basil A summer herb for the sunny edge of the bed below a vine.
- Geranium (a hardy flowering garden plant (pelargonium) that grows happily beside vegetables)
Pests and diseases
In New Zealand gardens the main grape problems are fungal diseases in humid weather and birds at ripening. An open canopy, a disease-tolerant variety and a net solve most of them.
Pests to watch for
- Birds Berries pecked or whole bunches stripped as they colour. Net the vine early.
- Passionvine hopper Small brown triangular-winged hoppers and fluffy-tailed nymphs on shoots in summer, with sticky honeydew and sooty mould.
- Mealybug White, waxy, cottony insects in the bunches and under bark, with sticky honeydew.
Diseases to watch for
- Powdery mildew Grey-white powder on leaves, shoots and young berries, which may split. Worst in warm, humid, overcast weather.
- Downy mildew Yellow, oily-looking patches on the upper leaf surface with white down underneath, after warm, wet weather.
- Botrytis Grey, fuzzy mould and rotting berries in the bunch, especially after rain near harvest.
- Anthracnose Small dark, sunken spots with pale centres on leaves, shoots and berries in wet springs. Also called black spot or bird's-eye rot on grapes.
Common questions
What is the best grape to grow in Auckland?
Albany Surprise is the classic choice for humid northern gardens because it has good disease resistance. Iona is another hardy option. Whatever you grow, keep the canopy open with summer pruning so the leaves dry quickly.
When do I prune a grapevine?
Prune hard in winter while the vine is dormant, before buds swell. Cut last season's side shoots back to a few buds each, keeping about ten good buds, as these produce the fruiting shoots. In summer, pinch shoots two leaves beyond the bunches.
How long does a grapevine take to fruit?
Usually two to three years after planting. A well cared for vine can then crop for many decades.
How do I know when grapes are ripe?
Taste them. Grapes do not sweeten after picking, and colour is not a reliable guide. When the berries are full, sweet and come away easily, cut whole bunches with secateurs.
Why are my grapes covered in white powder?
That is powdery mildew, common in warm, humid weather. Thin the leaves around the bunches for airflow, choose a resistant variety such as Albany Surprise, and in humid areas use a copper spray in winter and from bud burst, following the label.
How do I keep birds off my grapes?
Net the vine before the fruit starts to colour, using netting that lets sunlight through, and secure the edges so birds cannot get underneath.
Can I grow grapes in a pot?
Yes. Use a pot at least 60 cm wide or a half wine barrel, give it a strong support, and keep it to one or two main stems. Water regularly in summer.
Sources we checked: Yates NZ: How to grow grapes; Tui: Grape growing guide; Incredible Edibles: Grapes.