Environment

Down to Earth: November in the Martinborough Garden

By Tea Torbinio O’Neale, Mitre10 Garden Centre Supervisor Nov 2026

As spring hits its stride across the South Wairarapa, November brings a noticeable shift, the soil temperature reaches that sweet spot where garden growth simply explodes.

With late spring frosts generally behind us, November is the month of momentum. It is time to plant out tender summer crops, stay ahead of water management before the dry summer heat sets in, and ensure your flower beds are primed for a long season of colour.

In the vegetable patch the summer classics take centre stage, tomatoes, capsicums, chillis, and eggplants can be planted into warm, well-composted soil. Stake or cage tomatoes early to avoid disturbing roots later and pinch out lateral shoots on indeterminate varieties to encourage strong, fruit-bearing stems. Sow seeds directly for sweetcorn, beans (both runner and dwarf), zucchini, cucumber, and pumpkin. Sweetcorn thrives when planted in blocks rather than single rows to ensure effective wind pollination.

Keep the salad bar stocked by sowing small patches of lettuce, radishes, rocket, and spring onions every two to three weeks. Plant heat-loving herbs like basil, coriander, dill, and parsley alongside your tomatoes. Basil and tomatoes are not only natural companions on the plate, but planting them together in the bed helps deter soft-bodied pests.

November is also the crucial window to prepare your soil before the true drought conditions of high summer arrive. Mulch deeply by applying a 5–7 cm layer of mulch around fruit trees, vegetable rows, and flower borders. Mulching retains soil moisture, suppresses weed germination, and keeps root zones cool.

Water deeply at the roots early in the morning rather than light surface sprinklings in the heat of the day. This encourages roots to grow deep into the soil profile, making plants far more resilient.

Finally, don’t forget your colour and pollinator power, your flower garden is preparing for a mid-summer showcase, and a little effort now pays dividends for months to come. Plant out bedding plants such as marigolds, dahlias, cosmos, petunias, zinnias, and snapdragons. Dahlias especially love the Wairarapa sunshine—make sure tall varieties are staked at planting time. Feed your perennials and rose bushes as they prepare for their first heavy flush of summer blooms.

Quick tip, raise the lawnmower blade height slightly as temperatures rise to prevent the grass from drying out and browning.

Happy gardening!

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