Growing Conditions · New South Wales
Newcastle Growing Conditions
Soil, climate and a planting calendar for Newcastle — across 15 postcodes.
Soil
The soil most gardeners hope for: a balanced, free-draining loam that holds moisture without waterlogging and suits almost everything — lawns, vegetables, natives and ornamentals alike. It asks little beyond an annual mulch to keep its structure. A clay-loam subsoil beneath drains moderately and holds a useful reserve of moisture into summer, though low spots can still sit wet after heavy rain.
Climate & hardiness
A mild, warm-temperate area — ANBG Zone 3 — with winter lows around 6°C and little frost. A very wide palette does well here, including many subtropicals, and only genuinely cold-sensitive plants need protection.
Rainfall & growing season
Moderate rainfall (892mm a year) — enough for most gardens without heavy irrigation, though pots, lawns and new plantings need watering through summer. A frost-free, year-round growing season (~365 frost-free days) — something can be planted or harvested in every month, with warmth (and in the north, the wet season) setting the rhythm rather than cold.
Watering & drainage
This soil holds a useful reserve of water for plants (about 126mm), so with mulch and compost it carries most gardens through summer on moderate watering.
Planting Calendar for Newcastle
In the tropics and subtropics, the cooler, drier autumn–winter months are the easiest time to plant and establish new gardens.
Southern-Hemisphere timings, guided by this area's ~365 frost-free days and ANBG Zone 3; adjust for a cold or exposed garden.
Conditions by Postcode
| Postcode | Soil | Climate zone | Rainfall |
|---|---|---|---|
| 2285 | fertile, moisture-holding silty loam over silty clay loam | ANBG Zone 2 | 896mm |
| 2291 | the ideal free-draining loam | ANBG Zone 3 | 892mm |
| 2292 | the ideal free-draining loam over clay loam | ANBG Zone 3 | 892mm |
| 2293 | — | ANBG Zone 3 | 892mm |
| 2294 | the ideal free-draining loam | ANBG Zone 3 | 892mm |
| 2296 | free-draining sandy loam over sandy clay loam | ANBG Zone 3 | 892mm |
| 2297 | the ideal free-draining loam over clay loam | ANBG Zone 3 | 892mm |
| 2298 | fertile, moisture-holding silty loam over silty clay loam | ANBG Zone 3 | 892mm |
| 2299 | fertile, moisture-holding silty loam over clay loam | ANBG Zone 3 | 892mm |
| 2300 | the ideal free-draining loam over clay loam | ANBG Zone 3 | 892mm |
| 2302 | free-draining sandy loam over loam | ANBG Zone 3 | 892mm |
| 2303 | free-draining sandy loam over sandy clay | ANBG Zone 3 | 892mm |
| 2304 | the ideal free-draining loam over sandy clay loam | ANBG Zone 3 | 892mm |
| 2307 | the ideal free-draining loam over clay loam | ANBG Zone 3 | 892mm |
| 2308 | fertile, moisture-holding silty loam over clay loam | ANBG Zone 3 | 892mm |
Planning work in Newcastle?
Browse ABN-registered landscaping businesses in the area.
