Prep for a dry summer

Images of record-breaking floods, droughts and heatwaves across the Northern Hemisphere have Aussie gardeners wondering what the 2023/24 summer will bring. But there are two elements that play a huge role in ensuring the health and safety of your plants, no matter the weather – soil and mulch!

Soil Care

Nurturing soil is the best way to buffer the effects of floods, excessive heat, droughts and wind on plants. When soil is healthy and ‘alive’ with microbes, it drains better, but it also holds water, allowing plants to absorb more when needed. Plants can also activate their protective mechanisms more easily when they’re growing in healthy soil. Apply compost, at least annually, to promote water percolation and keep microbes happy and active. Aerate compacted soil, as it’s problematic during floods and droughts.

Marvellous mulch

Chunky bark mulch is a saviour. It absorbs moisture and buffers the effects of torrential rain, protecting the soil from inundation and erosion. Rake it away from plants after flooding to allow soil to dry. In low-rainfall summer zones, move existing mulch, apply seaweed solution and a non-toxic wetting agent to ensure water soaks in, then water slowly and deeply, and re-mulch. Fine or ageing mulch can become hydrophobic (water repellent). If you don’t want to replace it, lightly fork it, and apply a non-toxic wetting agent.

Preparing for a dry summer

• Shade: Install stakes or frames so they’re ready for attaching covers.
• Lawns: Longer grass shades the soil, locks in moisture and prevents erosion during flooding. Mow less often, on a high setting, and leave the clippings in situ.
• Pots: Move to shade or cluster closely. Re-pot plants if required, using a premium potting mix, or add water crystals. Immerse in water with added seaweed solution until bubbles stop. Mulch with anything! Place on saucers or other shallow vessels.
• Water: Water plants early in the day, when relative humidity is higher and the chance of fungal attack is reduced. Fork around the plants to ensure water penetration. Save cold water from showers.
• Vegies: Grow less and stagger sowing or planting times (succession planting).
• House plants: Move indoor plants away from windows, increase watering, leave water in saucers and mist at least daily.
• Weeds: Weed to reduce competition, leaving in situ if practical. Leave tall weeds to shade wanted plants.

Photo by iStock