What you should know about how fertilisers impact the environment
A good gardener knows how to use fertilisers – don’t overdo it, don’t use the wrong one and don’t use it if you’re close to bushland. Modern fertilisers have certainly revolutionised gardening (not to mention agriculture) but it does come at an environmental cost. The overuse of fertilisers in commercial and personal ways have led to the pollution of soil and water; caused bushland dieback, weed infestations and problems for local ecosystems. As a gardener, it’s important to be mindful of the environment when we use fertilisers so here’s what you need to know.
The lawn
Everyone wants a lush green space but it’s estimated that more than 80 per cent of lawn fertilisers used are either washed away or seep into groundwater. Despite these facts, most people overuse fertilisers on their lawn thinking more is better. However, lawns that are not fertilised usually grow just as well, so consider reducing the amount of fertiliser you use or even cut it out completely. If your lawn does need some TLC then use a slow-release fertiliser or a natural one.
Related link: 5 natural fertilisers that can be found in your house
Plants that don’t need fertiliser
Most garden plants grow well without the need of fertiliser. Plants like rhododendrons, azaleas, camellias, lavenders, rosemary and most native plants will thrive naturally. Most plants do well without fertilisers, except the following ones.
Plants that do need fertilisers
Some plants do need the help of fertiliser to flourish, such as:
Veggies: A pre-planting fertiliser such as manures or compost for root crops and fruiting veggies is usually enough. Liquid fertilisers can be used to help veggies along but stop once plants are half-grown.
Leaf veggies: These love fertilisers so use a pre-planting fertiliser and regularly fertiliser every couple of weeks until harvest.
Fruit trees: All fruit trees need annual fertilising in spring to ensure healthy growth (and lots of fruit).
Some flowering shrubs: Roses, hibiscus and gardenias are all well known to thrive on fertilisers.
Check out the latest catalogue from Plants Plus here for some great prices on some of these plants as well as more tips and inspiration for your garden.
Related links:
7 ways to make sure your garden is eco-friendly