Spring in a native garden: 5 tasks that make a difference
Spring in an Australian native garden arrives gradually and then all at once. One week the garden looks quiet and resting and the next there are new shoots pushing through, flower buds opening and the first honeyeaters moving in. The plants know what is coming before the gardener does.
A brown honeyeater feeding on callistemon. The arrival of nectar-feeding birds is one of the first signs that the garden has turned toward spring.
That window between the last cold snap and the first real warmth of spring is one of the most valuable in the gardening calendar. A small amount of well-directed effort now sets the garden up for months of strong growth, better flowering and less maintenance through the warmer season. These are the five tasks worth doing.
A native garden coming into spring, the point at which a small amount of well-directed work pays back over months.
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1. Refresh your mulch
Mulching is the highest-return task in a native garden at this time of year. A fresh layer applied before spring growth kicks off locks in the soil moisture that new growth depends on, suppresses weeds that arrive with warming temperatures and regulates soil temperature during unpredictable swings.
For native gardens, the choice of mulch matters. A coarse, woody mulch like eucalyptus chip, tea tree mulch or a similar material is preferable to fine organic mulches which break down quickly and can hold moisture too close to the soil surface. Apply a layer of 5 to 7 centimetres across garden beds and keep mulch pulled back at least 5 centimetres from plant stems and crowns. Piling mulch against the base of a native plant is one of the most reliable ways to cause collar rot.
A fresh layer of coarse mulch applied before the growth flush locks in soil moisture and suppresses the weeds that arrive with the warmth.
2. Prune for new growth
Spring is not the main pruning season for every native. The general rule across the genus is to prune after the main flush of flowering has finished and for a great many natives that falls in autumn rather than spring. What spring is genuinely good for is a narrower set of jobs: clearing frost damage, tidying tired winter growth and pruning the plants that have just finished flowering through winter. Our full guide to pruning Australian natives covers the plant-by-plant detail and the autumn window.
A good pair of gloves and sharp secateurs make spring pruning quicker and cleaner.
The spring-specific jobs are these.
Frost-damaged and winter-burnt tips
When
Once the last frost has passed
How
Trim back to healthy green growth. Leave damaged tips in place until frost risk is over, as they shelter the growth beneath them.
Winter-into-spring flowering shrubs, such as correas and croweas
When
As soon as their flowering finishes
How
Light tip prune only, taking no more than the current season's growth. These are slow growers, so restraint matters.
Straggly winter growth on fast growers
When
Before the spring flush begins
How
Tidy back to shape. This is a tidying prune, not the main structural prune.
Lomandras and dianellas that have become congested
When
Every three to seven years, after frost risk passes
How
Cut back to roughly half the plant's height. Autumn is the ideal window, but early spring works where winters are wet.
Grevilleas, banksias and hakeas
When
After each flush of flowers, not on a fixed date
How
Prune back flowering stems by up to a third, always leaving green leaves below the cut. For many of these the main prune falls in autumn, not spring.
The principle underneath all of them is the same: never cut back into wood that has no foliage visible on it, and remove no more than a third of the current season's growth.
Clean cuts from sharp secateurs heal quickly, where a crushed or torn stem lingers and invites disease.
Pruning tip: Before starting any spring pruning, wipe secateur blades with a cloth dampened with methylated spirits or a diluted bleach solution between plants. Fungal diseases and some bacterial infections spread easily on cutting tools and a native garden with a range of species in close proximity is particularly vulnerable.
3. Feed the soil the right way
Spring is the right time to support soil health in a native garden, but the approach is different to conventional garden feeding. Most Australian natives evolved in nutrient-poor soils and are highly sensitive to phosphorus, the primary ingredient in most general-purpose fertilisers.
Supporting soil biology with worm castings or a seaweed drench does more for natives than feeding the plants directly.
The more effective approach is to support the soil biology. A light top-dressing of worm castings worked gently into the surface with a garden fork adds microbial life and improves soil structure without risk. A diluted seaweed solution applied as a soil drench supports root development and stimulates the mycorrhizal networks that native plants depend on. If a fertiliser is used, especially in pots, choose one specifically formulated as low-phosphorus and safe for native plants, or make your own.
4. Start seeds for spring planting
For gardeners wanting native colour through spring and summer, late winter seed sowing is the task that makes it possible. Native annuals and short-lived perennials sown now will be at the right stage for transplanting when conditions are ideal.
Native hibiscus (Alyogyne huegelii), one of the short-lived perennials worth sowing in late winter for colour through the warmer months.
Everlasting daisies, paper daisies and native hibiscus are all well suited to late winter sowing. Propagation trays in a warm, sheltered position with consistent moisture give seedlings the controlled start they need. Keep the growing medium damp but not wet, as native seedlings are as vulnerable to overwatering at this stage as they are in the ground. Here are some other ideas for what to plant in spring in a native garden.
Winged everlasting (Ammobium alatum), one of the native daisies well suited to late winter sowing for spring colour.
Conditional dormancy
Many Australian native seeds have evolved to need environmental cues before germinating, a process called conditional dormancy. Some species need smoke exposure, others require a period of cold followed by warmth, or their seed coat to be physically abraded before moisture can penetrate. This is why native seeds sometimes appear not to germinate when treated the same way as vegetable or annual flower seeds.
5. Tidy, weed and plan the season
A thorough tidy before spring growth begins is one of those tasks that pays back far more than it costs in time. Removing winter weeds while they are still small, before they set seed, eliminates weeks of weeding later in the season. Clearing fallen leaves and debris from the surface of garden beds, but leaving intact any leaf litter that has been there long enough to become habitat, gives new growth room to emerge.
Removing winter weeds while they are still small, before they set seed, saves weeks of work later in the season.
This is also the right moment to assess your garden and plan what the coming season should achieve. Are there gaps in the planting that would benefit from a new native species? Areas where the soil drainage needs addressing before summer? Plants that have outgrown their space and need relocating or replacing? Making these decisions now, before the season is in full swing, allows for thoughtful choices rather than reactive ones.
Finally, clean, sharpen and oil tools before the busy season begins. A tool that is sharp, clean and properly oiled performs better, lasts longer and makes every task faster.
Spring sets the terms for the rest of the year
In a native garden, spring is less about dramatic intervention and more about removing obstacles. The plants are ready to grow and have been building toward this moment through the cooler months. The mulch, the pruning, the soil support and the seed sowing all serve the same purpose: clearing the way for what the garden already wants to do.
The reward for a few hours of preparation: a garden clear of obstacles and ready to grow.
A few hours of well-directed effort now will be visible in the garden for months.
keep reading
A Guide to Australian Native Gardening
How to plan, plant and care for a thriving native garden, whatever your experience level.
Read the guide →
