April Gardening Tasks
As autumn rolls on, shorter days and cooler temperatures signal winter is not far away. Growth is slowing, but there is still plenty to do, from harvesting late crops to planting for winter and getting on top of jobs that will make the colder months easier.
In the Vegetable Garden
Harvesting late crops
The last of the late summer and autumn vegetables are ready to harvest, including beans (dwarf and climber), beetroot, broccoli, cabbage, carrots, cauliflower, corn, cucumber, kūmara, leeks, lettuce, onions, potatoes, pumpkin, radish, silver beet, spinach and tomatoes.
Pick regularly to keep plants producing as long as possible.
Preparing beds for winter planting
- Clear finished crops and refresh beds ready for winter planting.
- Improve drainage by raising beds or topping up with Daltons Garden Time Compost or Enriched Garden Mix.
Empty beds
- Where beds are not being replanted straight away, sow a quick green crop such as mustard or lupin to protect and improve soil over winter.
- Apply a layer of mulch to help protect soil structure and reduce compaction from winter rain.
Containers
- Containers are a great option for small spaces, patios and gardens with poor drainage in winter.
- Leafy crops such as Asian greens, lettuce, spinach, silver beet and herbs are well suited to pots and planters through autumn and winter.
- Fill containers with Daltons Garden Time Potting Mix or Vegetable Mix and place in a sunny spot, as growth slows with cooler temperatures.
- Keep an eye on watering. Containers dry out more slowly in autumn, but still need regular moisture.
What to plant
- To keep your vegetable garden producing over winter, plant: broad beans, carrots, cabbage, cauliflower, lettuce, onions, peas, radish, silver beet, spinach.
- Stagger plantings so harvesting can be spread over a longer period, rather than having large amounts maturing at the same time.
- In cooler areas, keep an eye on overnight temperatures and use frost cloth if needed to protect late crops.
Strawberry Prep
Autumn and early winter is the main time for planting strawberries in New Zealand, depending on your region and plant availability.
Preparing strawberry beds
- Prepare beds by enriching soil with Daltons Garden Time Compost or Garden Time Strawberry Mix.
- Plan to plant a mix of strawberry varieties to help spread the fruiting season. See our Strawberry Guide for a list of what to grow.
Strawberries in containers
- Strawberries grow well in pots, troughs and hanging planters, making them easy to manage and harvest.
- Use Daltons Garden Time Potting Mix or Vegetable Mix for best results.
Replanting runners
- Strawberry runners are a great way to grow your own fresh new plants for free.
- Select strong, healthy runners now and peg them into the soil or a small pot until roots form.
- Once established, cut them from the parent plant and replant into prepared beds or containers.
- Replanting runners each year helps maintain plant vigour and keep crops producing well.
Fruit Garden
What’s ready now
- Late season apples such as Braeburn, Fuji and Granny Smith are ripening.
- Feijoas are maturing and will fall when ready, so collect them regularly for best eating quality.
- Kiwifruit harvest may begin towards the end of the month in some areas.
General care
Remove fallen fruit and leaves regularly to help reduce pests and disease carryover.
Pruning timing
It is still a little early for major pruning. Leave this until May or June.
Ornamental Trees & Shrubs
Start planning new plantings now so you are ready when fresh trees and shrubs arrive in garden centres very soon. Read our guide on choosing the right tree or shrub for your garden or container.
Flowering Winter Annuals
Plant winter annuals now to keep colour going through the colder months when much of the garden slows down.
Focus on spots you see often, such as near entrances, paths or outdoor living areas.
What to plant
Alyssum, calendula, cineraria, dianthus, lobelia, nemesia, pansy, snapdragon, stock and violas are all good options for reliable winter colour.
Getting the best from them
- Plant into well-prepared soil or quality mix so plants establish quickly before colder conditions slow growth.
- Space plants well to allow airflow, which helps reduce issues in damp winter conditions.
- Keep an eye on slugs and snails, especially after planting.
Perennials – dividing and cutting back
Lifting and dividing
- Divide overcrowded perennials to refresh plants and create new ones for other areas of the garden.
- Read our How To Divide Perennials Guide for step-by-step advice.
Cutting back
- Trim back tired or untidy growth to ground level to tidy the garden.
- Mark plants if needed before cutting back so they are easy to find again in spring.
Rose Care – Autumn clean up
- Clear away fallen leaves and spent blooms from around plants to help reduce disease carryover.
- Lightly tidy any long or straggly growth.
- Delay major pruning until leaves have fallen to avoid encouraging new growth during mild spells.
- Apply a clean-up copper spray during April to help reduce disease carryover into winter.
Indoor Plant Care
- Light and position: As light levels drop, move plants closer to windows or brighter rooms where needed.
- Watering: Water requirements lessen as temperatures drop, so check soil moisture before watering.
- General care: Remove yellowing leaves and wipe dust from foliage to keep plants healthy through winter.
Lawn Care
April is a good month to renovate existing lawns, sow new lawns or lay ready lawn. The key to success lies in the preparation, including ensuring good drainage and using top quality lawn soil – try our Daltons Premium Lawn Soil (available bagged or in bulk).
An autumn feed can help strengthen roots before winter and improve spring recovery.
Choosing the right grass seed
Select a grass seed suited to your property and growing conditions, as this can make a big difference to long-term lawn performance.
Watering after sowing or laying ready lawn
- Keep newly sown grass seed consistently moist until it has germinated and established – avoid letting the surface dry out.
- With ready lawn, continue to water regularly and thoroughly until the roots have firmly taken hold in the existing soil.
Quick Answers
What vegetables can I plant in April in NZ?
Broad beans, cabbage, cauliflower, carrots, lettuce, onions, peas, radish, silver beet and spinach.
Should I prune fruit trees now?
No, wait until May or June for most fruit tree pruning.
Can I still plant/sow lawns in April?
Yes, lawns can be sown or laid in April with good preparation and consistent watering while they establish.
What should I be doing in the garden in April in NZ?
Focus on harvesting late crops, planting winter vegetables, improving soil, and preparing lawns and garden beds for the colder months ahead.
