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When to plant crocuses in Devonport: by 27 May

In Devonport, crocus: plant by 27 May. The winter here is too mild for our late-planting rule, so we give no later limit. For planting stock, the places nearby include Plants Plus Nursery Devonport (plant nursery, 0 km) and Big Pot Nursery (garden centre, 11 km); addresses and opening hours are below.

Crocus in Devonport: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in July, average 5.4 °C.

Plantingby 27 May
First autumn frost26 June
Coldest nightsJuly, 5.4 °C
Soil back at 1 °C in springalready in the first week of July
Daylight9:31 on 27 May
Daylight at the winter solstice9:12

The same dates in Devonport hold for Garlic, Tulip, Daffodil and Hyacinth.

Crocus in Devonport: depth, winter cold, pests and pets

Plant Dutch crocuses (Crocus vernus) about 12 cm deep and 9 cm apart; smaller species go 7–10 cm deep (RHS).

In Devonport the average daily temperature stays at 10 °C or lower for about 13 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 15–17 weeks at about 2–10 °C. That is less than the bulbs need, and without more cold they may not flower properly. The cold can also be given in a refrigerator at about 2–7 °C, as Wisconsin Horticulture Extension does for crocuses forced in pots.

Crocuses multiply on their own (they naturalise); in a lawn, hold off mowing until their leaves die back (RHS).

Birds, squirrels and rodents damage crocuses; planting under metal mesh may reduce losses (RHS). Spring crocus gives dogs and cats vomiting and diarrhoea; do not confuse it with autumn crocus (Colchicum), which is very toxic (Pet Poison Helpline).

Sources: RHS, Wisconsin Horticulture Extension, Pet Poison Helpline.

Crocus in nearby cities

All the nearest cities on our list plant crocus earlier than Devonport; the closest date is in Melbourne, 1 day earlier.

CityDistanceDateDifference
Launceston71 kmby 9 May18 days earlier
Melbourne393 kmby 26 May1 day earlier
Ballarat455 kmby 20 May7 days earlier
Bendigo523 kmby 20 May7 days earlier
Albury570 kmby 21 May6 days earlier
Canberra699 kmby 30 April27 days earlier

Where to buy crocus for planting in Devonport

Planting stock goes into the ground by 27 May; buy it before that. Within 15 km of Devonport OpenStreetMap lists 1 garden centre and 1 plant nursery (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Devonport?

In Devonport, crocus: plant by 27 May. The winter here is too mild for our late-planting rule, so we give no later limit.

When is the last spring frost in Devonport?

Last spring frost around 23 August, first autumn frost around 26 June.

Other crops in Devonport, with their dates