What To Plant In March With Tui
Posted on March 04 2026
As we move into autumn, there’s still plenty happening in the garden, and March is a great time to plant a wide range of vegetables.
A few simple jobs now can make a real difference in the months ahead such as topping up your beds with compost and organic fertilisers, reducing overcrowded garden beds, and stay on top of pests and mildew.
Here's a helpful guide from Tui as to what plants are good to plant right now.
Tui has a fantastic range of garden products, check them out here.
What To Plant In March
Basil, beetroot, bok choy, broccoli, cabbage, carrot, cauliflower, celery, coriander, eggplant, kale, leek, lettuce, mesclun, onion, parsnip, parsley, potatoes, radish, rhubarb, rocket, silverbeet, spinach, spring onions.
What To Harvest In March
Basil, beetroot, beans, capsicum, chilli, coriander, courgette, cucumber, eggplant, lettuce, mesclun, parsley, potatoes, pumpkin and squash, radish, rhubarb, rocket, silverbeet, spinach, spring onion, tomatoes, sweetcorn.
Garden Maintenance In March
Dry and save seeds of tomatoes, cucumbers, melons and beans, and store them in labelled envelopes ready for sowing in the spring.
Replenish the soil with a new layer of compost Tui Sheep Pellets and Tui Vegetable Food.
Carrots - thin rows of carrots to ensure the roots develop evenly, and to reduce the risk of attack by carrot rust fly.
Lettuces - these can easily be grown through the cooler months; the red-leafed and cos types are the best ones to grow.
Potatoes - dig up main crop potatoes when the tops begin to die down and wither. Store in sacks in a dry place with plenty of air movement and away from direct sunlight.
Tomatoes - cut long, leafy stems back to encourage the fruit that has set on the bottom part of the plant to develop fully and ripen. It's unlikely that any flower appearing on the end of these stems will set fruit that will be able to ripen this season. Immediately remove any diseased leaves or fruit that may appear, to limit the spread of the problem.
Feed established plants once a month with Tui Organic Seaweed Plant Tonic. Some crops, like pumpkins and melons, can be fed every two weeks.
Mildew can be a problem on cucumbers, courgettes and marrows; spray with a suitable spray from your garden centre. Lay Tui Quash slug & snail control to control these pests.

