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Rooted Wisdom- September

What do do in the month of September -NZ

Sudeep Roy
Sudeep Roy

Aug 27, 2025

2 mins to read
Rooted Wisdom- September

Spring Planting Guide

Grow Your Edible Garden

  • Seed Starting Indoors: Use a mini greenhouse or a bright, partially shaded, and sheltered spot to germinate seeds. Ideal crops include:
    • Basil, peppers (capsicum), chillies, eggplant
    • Melons, cucurbits (pumpkin, squash, zucchini)
    • Tomatoes
  • Protecting Seedlings: Shield young plants from cold nights and frost. Gradually acclimate them to outdoor conditions.
    • Use cloches to raise temperature.
    • Budget tip: Cut plastic drink bottles in half and place over seedlings (remove the lid) to protect from slugs, snails, and birds.
  • Direct Sowing Outdoors: Plant sweetcorn, beetroot, carrots, chives, coriander, dill, celery, celeriac, kale, leeks, lettuce, pak choi, parsley, parsnip, peas, radish, rocket, silverbeet, spinach, spring onion, swede, and turnips.
  • Frost-Sensitive Plants: In cooler areas, plant citrus trees and other frost-sensitive species in spring. Choose a sunny, well-drained site.
  • Strawberries: Plant new strawberry plants and fertilize them.
  • Potatoes: Chit (sprout) early potatoes for a Christmas harvest.
    • Place seed potatoes in a tray with the eyes facing upward, in bright light.
    • Plant once sprouts reach about 1 cm.
  • Kumara: Shoots become available in garden centers around October, or propagate your own.

Flower Garden Planning

  • Start seeds of cosmos, lobelia, marigold, petunia, salvia, and zinnia indoors or in pots.
  • Sow wildflower seeds to add color and attract beneficial insects.
  • Plant dahlia tubers and tuberous begonia tubers (recommendations: nonstop begonias and Hammett dahlias).
  • Protect seedlings from slugs, snails, birds, and rabbits where necessary.

Seasonal Harvest

  • Harvest vegetables such as cabbages, broccoli, cauliflower, kale, herbs, beetroot, silverbeet, Florence fennel, and broad beans.
  • Citrus trees may still have fruit ready to pick.
  • Gather spring bulbs and fresh flowers for vases.

Shrubs and Perennials

  • Trim frost-damaged growth once frost risk has passed.
  • Stake tall perennials before they become heavy in summer.

Tree Care

  • Check tree stakes and ties to prevent damage to trunks.

Lawn Care

  • Sow lawns in early spring (though autumn is preferred).
  • Keep soil moist for seed germination and continue watering until the lawn is well established.

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