Ask the Plant Doctor! How to get rid of ants in your garden


Eradicating red ants from the garden may take time. Photos: 123rf.com
Do you have a question about plants or how to maintain your garden? Send your questions to the Plant Doctor! Email your questions to lifestyle@thestar.com.my with "Plant Doctor" in the subject field. Questions may be edited for brevity and clarity.

1. Is there any way to remove big red ants from a mango tree? – Nancy Teh

Any ant bait or insecticide can be used to get rid of the ants, but you may want a natural control method. For this, you need to find the red ants’ nest. Look under rocks, woodpiles and even in the soil.

Try to follow the red ants’ trail back to their nest. Once you locate it, pour boiling water into the nest to kill the ants.

Repeated treatments with the boiling water may be required to fully eradicate the red ants.

It’s better to under-fertilise than over-fertilise your plants.
It’s better to under-fertilise than over-fertilise your plants.

2. How often should we fertilise flowering plants? – Foong Kam Wah

Your query is quite broad. The quantity and frequency of fertiliser application depend on several factors, including the specific plant species, its growth stage, soil conditions and the type of fertiliser used.

Annual flowers typically require the most frequent fertilisation, about once every month or two during their growth season.

On the other hand, perennial flowers usually require a biannual fertilisation.

Flowering shrubs and trees mostly need just a single annual application of fertiliser.

Always adhere to the manufacturer’s guidelines when using fertilisers.

Refrain from over-applying or rapidly switching between various types of fertilisers.

A preferable approach is to apply smaller, more frequent doses of fertiliser rather than a single large dose.

If you are uncertain, it is better to under-fertilise, as rectifying over-fertilisation can be more difficult.

Dr Christopher Teh heads the Dept of Land Management, Faculty of Agriculture, Universiti Putra Malaysia and coordinates the Healthy Garden series. The views expressed are entirely his own.

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gardening , insecticide , ants , pests , fertiliser

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