Gardening in Waitaki 1st September 2026

“Tra La” – spring at last, and what a welcome it is. After winter, every day seems to bring something new into the garden. Sweet peas, ranunculus, anemones and tulips are pushing through. The bees will soon be busy on sunny days, although a cold snap or frost can still remind us that spring has only just begun. There is plenty to do, but after winter, getting back into the garden feels like a privilege. Recent rain softened the ground beautifully, and those strong winds made it necessary to get hoses out. This an ideal time for planting and weeding; weeds are also enjoying the warmer conditions, so hoe or hand-pull them while they are small and before they flower and set seed. While working around the garden, take stock of jobs needing attention. Stake delphiniums before they become too tall, remove excess mulch from iris rhizomes and peony crowns, and cut back old catmint if it has not already been done.Spring feeding: Plants, shrubs and trees will respond to spring feeding. Liquid-feed perennials and bedding plants, while trees and shrubs will benefit from a good general fertiliser. Camellias, azaleas and rhododendrons can show yellowing after winter as shallow-rooted plants use available nitrogen, so give them the acid fertiliser formulated for these plants. Roses are pushing strongly now; if yours have not yet been pruned, do it promptly as the buds are swelling.Seeds and seedlings: Winter-sown pansies and dianthus can be thinned and potted into deeper trays, while lupins, hellebores and Oriental poppies benefit from individual small root pots so they develop a good root ball before planting out. Sow late-spring and summer flowers into seed trays, keeping them raised off the cold ground and protected with glass or clear plastic. A mist spray in the morning is preferable when watering small seedlings. It is also time to think about baskets and pots, using shallow-rooted plants such as pansies, primulas, and dwarf sweet peas until the weather warms enough for petunias, lobelia and begonias.Ornamental grasses can be given their spring haircut, cutting away old seed heads and clearing the dead thatch from around the base. The material can be reused as mulch, compost cover or bedding for animals.Lawns: Give lawns an early spring feed just before, or during, rainfall, or hose if dry so the nutrients are washed in. Keep the mower blades higher as grass comes out of dormancy. If moss is a problem, sulphate of iron can be watered over affected areas; once the moss turns black, rake it out. But remember that moss is usually a symptom of an underlying problem such as waterlogging, shade, compaction or mowing too closely.Vegetables: There is plenty to do in the vegetable garden. On the coast, sow lettuce, spring onions, carrots and peas, and plant leafy vegetables at two-week intervals for a continuous supply. Protect young plants from frost and birds. Frost cloth is perfect as plants still get enough light while hiding seedlings from birds. Prepare ground for potatoes and get seed potatoes planted when the soil is suitable. Do not rush parsnips, beans, corn, pumpkins or squash into cold ground – they need much warmer soil to germinate. Start pumpkin, butternut, squash and corn under protection now to give them the long growing season they need.Fruit: Peach and nectarine buds are at bud burst, so this is the last opportunity to apply copper spray for leaf curl – once the trees are in blossom it is too late. Prune peaches and nectarines now if necessary, remembering that they fruit on wood produced last summer. Gooseberries can also be thinned before the leaves arrive, removing crowded branches and raising the lower “skirt” to make picking easier. Strawberries are beginning to move towards budding and will appreciate a mulch of compost or old animal manure, covered with straw or pine needles. Prune blueberries now  . Remove dead, diseased, weak, crossing, and low-growing branches, keeping the bush open and vase-shaped for good light and airflow. Every 3–4 years, remove one or two oldest canes at ground level to encourage new growth. Overgrown bushes can be cut back hard, but this may sacrifice a season’s crop. Feed with an acid-loving fertiliser, mulch well and water during dry periods. Avoid excess nitrogen, which encourages leaves rather than fruit. Prune Prunus trees on a fine day, removing weak or crossing branches before they become large. Early spring is also a time to think beyond our own gardens. Native green corridors through Waitaki can soften urban streets, provide habitat and encourage birds and wildlife. The cycle track between Oamaru and Weston and the planting around Cape Wanbrow show what can be achieved when people plant for biodiversity as well as beauty.Cheers, Linda.