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When to plant garlic in Blenheim: 1 May – end of June

In Blenheim, garlic: plant from 1 May to the end of June. For planting stock, the places nearby include Golden Mile Produce (farm shop, 6 km); addresses and opening hours are below.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

The average daily temperature here stays above 0 °C all winter, and at least two months average 10 °C or less: the cold garlic needs, one to two months at 0–10 °C (RHS). The two-month threshold is our rule of thumb. Sources: UVM Extension, UNH Extension, RHS.

Garlic in Blenheim: soil, season and weather

Garlic goes into the ground in Blenheim from 1 May to the end of June; the window opens a month before the first autumn frost. No month averages below 0 °C at night; the coldest nights, in July, average 5.3 °C.

Planting1 May – end of June
First autumn frost31 May
Coldest nightsJuly, 5.3 °C
Soil back at 5 °C in springalready in the first week of July
Harvest (card)about 8 months after planting: January
Daylight10:20 on 1 May
Daylight at the winter solstice9:10

The same dates in Blenheim hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Blenheim: care after planting

Planted on 1 May: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

  • 1 May — feed: nitrogen
  • 29 May — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

Around Blenheim, Wellington is 30 days earlier and Nelson 21 days later.

CityDistanceDateDifference
Nelson63 km22 May – end of June21 days later
Wellington73 km1 April – end of June30 days earlier
Palmerston North189 km22 May – end of June21 days later
Christchurch249 km6 May – end of June5 days later
New Plymouth272 km1 April30 days earlier
Napier336 km1 April30 days earlier

Where to buy garlic for planting in Blenheim

Planting stock goes into the ground from 1 May to the end of June; buy it before that. Within 15 km of Blenheim OpenStreetMap lists 1 market and 1 farm shop (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Blenheim?

In Blenheim, garlic: plant from 1 May to the end of June. Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

When is the last spring frost in Blenheim?

Last spring frost around 10 August, first autumn frost around 31 May.

Other crops in Blenheim, with their dates