Planting low-growing plants beneath taller ones to make use of the shaded space, suppress weeds, and create a more visually layered garden. Hostas, ajuga, and violets are popular underplanting choices.
Underplanting involves strategically positioning low-growing plants, shrubs, or groundcovers at the base of taller specimens to create visual depth and maximise your garden's productive space. This layered approach is particularly valuable in Australian gardens where summer heat and water scarcity are concerns, as underplanting helps shade soil, retain moisture, and moderate temperature fluctuations around plant roots.
When underplanting, select species that tolerate the specific light conditions created by your taller plants. Shade-loving ferns, hostas, and native groundcovers work well beneath deciduous trees, whilst drought-tolerant sedums and succulents suit drier areas. Consider your climate zone when choosing companions: tropical zones (1-3) benefit from lush shade plants like Philodendrons, whilst temperate zones (8-10) thrive with native understory species like Liriope and Dianella.
Timing is crucial—underplant in autumn (Mar-May) or spring (Sep-Nov) to allow establishment before summer heat. Space plants appropriately to prevent competition for water and nutrients. Mulch generously to moderate soil temperature and suppress weeds. Your local Bunnings stocks suitable groundcovers and shade-tolerant plants suited to your region.
Underplanting also provides habitat for beneficial insects and creates softer garden transitions, reducing maintenance whilst enhancing biodiversity in smaller spaces. It's an economical way to achieve full, mature-looking gardens more quickly.