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When to plant hyacinths in Dubbo: by 20 May

In Dubbo, hyacinth: plant by 20 May. The winter here is too mild for our late-planting rule, so we give no later limit.

Hyacinth in Dubbo: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in July, average 4.9 °C.

Plantingby 20 May
First autumn frost19 June
Coldest nightsJuly, 4.9 °C
Soil back at 1 °C in springalready in the first week of July
Daylight10:23 on 20 May
Daylight at the winter solstice10:02

The same dates in Dubbo hold for Garlic, Tulip, Daffodil and Crocus.

Hyacinth in Dubbo: depth, winter cold, pests and pets

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS).

In Dubbo the average daily temperature stays at 10 °C or lower for about 3 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 12–15 weeks at about 2–10 °C. That is less than the bulbs need, and without more cold they may not flower properly. Where winters are not cold enough for long enough, LSU AgCenter keeps tulip and hyacinth bulbs in the refrigerator for at least six to eight weeks before planting, and plants them only once the soil has cooled: warm soil can cancel the chilling. Keep fruit out of that refrigerator — ripening fruit gives off ethylene, which harms the flowers (Wisconsin Horticulture Extension).

Flowers get smaller in the years after planting: for full spikes, replace the bulbs or add a few new ones each autumn (RHS).

If squirrels are a problem, protect the bulbs with wire mesh (RHS). Hyacinths are toxic to dogs, cats and horses: intense vomiting and diarrhoea (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, LSU AgCenter, ASPCA.

Hyacinth in nearby cities

Around Dubbo, Canberra is 20 days earlier and Devonport 7 days later.

CityDistanceDateDifference
Orange123 kmby 14 May6 days earlier
Canberra339 kmby 30 April20 days earlier
Albury451 kmby 21 May1 day later
Melbourne700 kmby 26 May6 days later
Ballarat732 kmby 20 Maysame day
Devonport1,012 kmby 27 May7 days later

Where to buy hyacinth for planting in Dubbo

Planting stock goes into the ground by 20 May; buy it before that. Within 15 km of Dubbo OpenStreetMap lists 1 garden centre, 2 farm-supply shops and 1 plant nursery (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant hyacinths in Dubbo?

In Dubbo, hyacinth: plant by 20 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 Dubbo?

Last spring frost around 29 July, first autumn frost around 19 June.

Other crops in Dubbo, with their dates