How to Grow Grapes in New Zealand

Grapevines are a great pick for Kiwi backyards. Give them sun, free‑draining soil, and the right winter prune, and they’ll reward you with bunches of sweet fruit for years.

Varieties to Grow

Most grapevines take around three seasons to settle in and start cropping well, so think of the first couple of years as ‘building the framework’.

Garden centres stock a mix of table and wine grape varieties. For home gardens, reliable old favourites like Niagara and Albany Surprise are still worth a look, alongside newer seedless options.

If you’re not sure what will suit your area, choose a variety recommended locally and plant it in the sunniest, most sheltered spot you’ve got.

Variety	Colour / Flavour	Ripens
Niagara	A green-gold variety with large, juicy grapes with thin skin and few seeds.	Late February to early March.
Albany Surprise	Large, black, sweet grapes that consistently crop each year.	March to early April.
Schuyler	A popular variety with large, sweet, juicy black grapes.	Late February through to mid-March. Also has attractive red foliage in Autumn.

Ideal Planting Conditions

Sun is the big one. Grapes love warmth and light, and you’ll get better ripening and sweetness in a bright position.

Pick a position with shelter from strong prevailing winds.
Make sure the soil drains well (grapes dislike ‘wet feet’).
Plan support before you plant: wires on posts, a fence, pergola, or a trellis system all work well.
In frost-prone areas, protect new spring shoots with frost cloth from late August through to September, as young growth can be frost tender.

Soil Preparation

Before planting, clear weeds and loosen the soil.
Work plenty of Daltons Compost through the planting area to improve soil structure and encourage healthy root growth.
If drainage is slow, plant on a slight mound or raised row so water moves away from the roots.

Prime Planting Time

New plants are available from Garden Centres from May throughout winter, which is the ideal time for planting. When purchasing, check new plants are healthy and that graft unions are clean.

Planting in the Garden

Dig a hole about twice the width and depth of the root ball.
Mix in a few generous handfuls of Daltons Garden Time™ Compost.
Plant at the same depth it was growing in the pot, ensuring the graft union remains above the soil level.
Backfill with soil, firm gently, and water in well.
Install support wires or ties at planting to guide early growth.
Mulch around the root zone with Daltons Premium Mulch & Feed to help retain moisture and suppress weeds, keeping mulch clear of the stem.

Pruning & Training

Correct pruning is the secret to reliable crops.

Prune after leaf drop, when the vine is dormant.
Start by establishing strong main leaders (trunks/canes) that can be attached to wires or a fence.
Each winter, prune laterals back to two buds (where the growth appears from the main leaders). Those buds produce the new season’s shoots, and your grapes form on that new growth.
It can feel like ‘hard pruning’, but grapevines grow vigorously and respond well to it.

Harvesting

Grapes are ready when they’re fully coloured and taste sweet. As a rule, it’s better to taste than guess. Photo: harvesting correctly: Secateurs cutting a bunch with a short stem attached.

Harvest on a dry day for the best flavour and keeping quality.
Snip bunches off cleanly with secateurs rather than pulling them by hand (pulling can tear stems).
Handle gently (grapes bruise easily), a lay bunches in a single layer if you can, rather than piling them up.
Remove any split, shrivelled, or mouldy grapes so they don’t affect the rest of the bunch.
Store in a cool place or refrigerate in a breathable container.
Wash grapes just before eating to avoid extra moisture speeding up spoilage.

Summer care

A little summer tidying helps fruit ripen well.

During the growing season, shorten vegetative growth if necessary to allow for the better light, ventilation and formation of fruit.
Remove basal shoots (suckers) from the base to keep energy focused on productive growth.
If bunches are very tight and heavy, lightly thin clusters to improve airflow and even ripening.
In very hot weather, young vines may wilt, so temporary shade can help them.

Watering

Water regularly during the first couple of seasons while the vine establishes.
During dry spells, water deeply rather than little and often.
Aim water at the root zone, not over the leaves and fruit, to reduce fungal issues.

Fertilising

Grapevines are vigorous growers and established vines are typically light feeders. Over‑feeding encourages leafy growth at the expense of fruit.
Feed in spring to early summer (late October to early December) - apply Daltons Garden Time™ Fruit & Citrus Fertiliser to support healthy growth and fruit development.
For newly planted vines, apply small amounts of fertiliser around the base of the vine in the first spring to assist establishment and growth.

Pests and diseases

Table grapes have relatively few serious pests but keep an eye on vines through the season.

Regularly inspect the vines during the growing season for any early signs of pests or disease.
In particularly humid summers, both downy and powdery mildew can be problematic, however by careful plant management, such as good plant spacing, careful pruning and watering at the root zone will help minimise problems.
If birds are eyeing up your crop, netting as grapes start colouring is often the simplest fix.

FAQ

How can I increase the size of my grapes?
Thin excess bunches early so the vine puts more energy into the ones left. Keep watering consistent and avoid high-nitrogen fertilisers.

My grapevine has lots of leaves but hardly any grapes. What’s going on?
This is often caused by over-feeding and/or not pruning hard enough. Ease back on fertiliser and prune firmly in winter. Also check you’ve got a fruiting variety rather than an ornamental vine.

Should I remove leaves during the season?
Yes, selectively. Remove leaves shading the bunches and shorten back very vigorous growth so fruit can form and ripen more reliably.

What do I need to do to ‘put my grapevine to bed’ for winter?
After leaf fall, prune and tidy the vine, check drainage, and add mulch around the base (keeping it off the trunk).

Do I need to protect new grape shoots from frost?
In areas with late frosts, new shoots can be damaged from late winter to early spring. Use frost cloth from late August through September if frosts are likely.

Can I grow grapes in a container?
Yes. Use a large pot (40–50L or bigger) with excellent drainage, and a sturdy support for training. Container vines need more regular watering than in-ground vines.

Quick Answers

When is the best time to plant grapes in New Zealand?
Plant grapevines from late autumn through winter (May to August) while they’re dormant.

Where should I plant grapevines?
Choose a sunny, sheltered spot with free-draining soil and good airflow. Train vines along a fence, pergola or trellis.

How long until a grapevine produces fruit?
Most grapevines start cropping lightly in year three, with heavier harvests as the vine matures.

When do I prune grapevines?
Prune in winter after leaf fall. Cut laterals back to two buds to encourage strong fruiting shoots.

When are grapes ready to harvest?
Harvest when grapes are fully coloured and taste sweet. Snip bunches off with secateurs in dry weather.