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Fertilizing your Aloes

Updated: Feb 26, 2023

Plants grow right through the year, and even though some may seem to be standing still their roots are always growing. It is important to feed all plants, even indigenous ones need to be fed to perform at their best. The late summer rains are a perfect opportunity to add your brand choice of fertilizer. The question is which one do I add now to be watered in with the rains for my flowering aloes?

Organic fertilizers are by nature slow release and originate from animal, and plant sources and natural mineral deposits.

The combination of 3:1:5 is best suited for feeding flowering plants, shrubs, and trees; fruit trees and shrubs; as well as flower pots and container plants. Topping up the Nitrogen and Potassium in your soil profile promotes vigorous flowering and depth of colour in your aloes. Strengthening your aloes natural resistance: to possible diseases, by building strong cells.

Every bag of fertilizer has a series of numbers prominently displayed. They will be 3:1:5 and they represent the following three elements (and in this order):

  • Nitrogen (chemical symbol N)

  • Phosphate (P2O5) (chemical symbol P)

  • Potassium (chemical symbol K)

So what does each one do?


· Is for the growth of foliage

· Helps grow lush, tender, green leaves

· Might be needed if there is a presence of yellow-green foliage and little or no growth

· Is an element that flushes through the soil easily so follow-up treatments might

be necessary.

Phosphate (P2O5):

· Is for root growth

· Is for faster maturity of plants

· Is for the development of flowers, fruits, seeds

· Lasts long in the soil


· Is for greater vigor to tolerate changing weather conditions - important in these times

of climate change

· Is for helping plants combat disease better

· Is for helping the plant to make food

· Is for stronger stems and cell wall structures

· Is needed to prevent slow growth and weak stems; like Nitrogen, it leaches from the soil but not as quickly, so repeat treatment every so often.

NB: Always use fertilizers sparingly and according to directions to avoid fertilizer burn, whether you are using a slow-release, quick-release, or organic fertilizer.

An easy way to remember the order is ‘up [foliage], down [roots], all around’.

Photo courtesy of Ndundulu Aloes of Sunbird Aloes ‘Midlands’, from the open planting.


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