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HomeLifestyleGardener shares her ‘favourite homemade fertiliser’ recipe for roses to ‘boost flowering’

Gardener shares her ‘favourite homemade fertiliser’ recipe for roses to ‘boost flowering’

An important part of caring for roses is regular and proper fertilisation as these plants are heavy feeders. 

Roses can survive without being fertilised, but they will struggle. It’s important to use the right fertiliser for the plants to produce the healthiest plant possible.

If the rose has too much nitrogen, gardeners will have a lush plant with few or no blooms. If it has too little nitrogen, the plant will have yellow leaves, no new growth, and small pale roses.

Too little phosphorus results in dull foliage, dropped leaves, weak flower stems, and buds that will not open.

Lack of potassium produces weak stems, poorly developed buds, and yellow-edged leaves that turn brown.

It is not just chemical fertilisers that can benefit roses, kitchen scraps can also be used – and there are two in particular that stand out. 

Flower and interior stylist at Lisa Fontanarosa Collection, Lisa Fontanarosa told “To help boost flowering while promoting the growth of your roses, think of the foods you already eat that are rich in magnesium and potassium such as bananas, eggs and your morning cup of coffee. 

“These are all the best things for fertilising your garden roses. Yes, that’s right, believe it or not, banana peels and eggshells are one of my favourite homemade fertilisers for my rose plants and my gardens.”

She explained that they contain potassium and other “beneficial” minerals. These include phosphorus, calcium and sulphur.

To create this “homemade fertiliser”, start by crushing two to three eggshells and mix it with one sliced banana peel.

Scoop in coffee grinds and work all three into the soil under and around the roses. 

Add this to a container before mixing in the planting soil. Each will act as a “slow release fertiliser, pest deterrent and soil amendment”.

Eggshells also act as a “pest deterrent” when cut up into small coarse pieces and sprinkled around plants because the soft sensitive feet of unwanted critters make navigating sharp eggshells “challenging”.

Lisa pointed out that gardeners can also just use banana peels since they decompose easily, and rapidly and release valuable minerals such as sulfur, calcium, potassium, magnesium and trace elements into the soil. 

For just bananas, mash four to six banana peels into a smooth paste using water and mix it in the growing mix.

When out of bananas, the expert said she likes to combine eggshells with mushroom manure, and all-purpose organic plant food. 

She said: “Add a few tablespoons of this mixture around the rose bushes and water it.”



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