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Lemon Eureka is the most popular
Lemon Eureka is the most popular

One of the most versatile fruit used by many almost every day; Lemons are incredibly easy to grow, so we think every garden should have one. Being well suited to growing in containers they also work well on patios or balconies and as they are self pollinating, you only need one tree to provide your own lemons. With a few easy steps to follow one can grow the best lemons.

Lemons set their fruit through early summer after a spring flowering and are ready to harvest from mid winter. They stay fresh on the tree for months which means that as they mature one can have a steady supply of fruit for most of the year.

With a few easy steps to follow one can grow the best lemons.


Selecting your lemon tree:

There are a few lemons that grow well in our local area. As lemons are cold tender and can be frosted as a young tree we always recommend planting them through spring and early summer for the best growth on them before the next winter. One of the most popular is Lemon Eureka; a smooth skin lemon which is a good for juice and the tree bears the most fruit of all the varieties and can also produce fruit throughout the year. The Cape Rough Skin Lemon has a thick rind which makes it good for cooking. The Meyer Lemon is popular as it has a larger fruit and is juicy and has a good rind. Not always available but when we find them we get the Genoa Lemon in stock. It’s is similar to a Eureka but a more compact growing lemon perfect for containers and smaller spaces.


Where to plant:

All lemons need a well drained soil to grow well. If your soil has a high clay content or holds to much water the tree will eventually produce less and less fruit and also be more susceptible to disease. Water your lemon tree well once a week to every ten days. If it looks like your soil might be a problem rather opt for a container. When selecting a container ideally select a pot that is more than 40cm in height and diameter. Your tree must have the most sun you can give it. Full sun is the best but some shade in the day is not a problem. If your tree gets more shade one gets less fruit and the tree can also be more susceptible to disease.



Lemon trees are very hungry and need regular feeding. The most important time of the year to feed them is late winter through spring with a high nitrogen fertiliser. Feeding them with the organic fertiliser, BioOcean will give them the nitrogen they need as well as the potassium to stimulate flowering which will lead to a good harvest. The one thing that a lemon tree does not need is a lot of water. Keep your lemon tree on the dry side particularly in winter when they do best if watered very little indeed.

What can go wrong:

NB: Always check the dilution rate and waiting period to harvest before applying any insecticide to edible crops.

  • Most Lemon trees get bumps on the leaves at some point. This is from an insect known as Psylla. The new leaves are stung which damages the young leaf cells and as the leaf matures the leaves have the characteristic bumps. If left unchecked greening can occur which is when the fruit does not ripen and the tree losses a lot of its leaves which will reduce its strength.
    We recommend using a systemic insecticide which will move through the plant and protect the new shoots giving the leaves time to harden. Complete350 or Efekto Plant Protector will work the best. NB: Just remember if you are using a systemic insecticide that you have to pick off all the fruit beforehand. Apply as the tree starts to flush its new leaves.
  • In recent years the white and black powdery substance on the underside of leaves has become a problem. This will eventually kill your tree as it causes all the leaves to fall off if left unchecked. Known as sooty mould it appears when either mealy bug – the white fluffy insect, or Scale which is a small yellow dot like insect infect the underside of the leaves. They suck sap and secrete honeydew that encourages the sooty mould. Getting rid of the insects will clear the mould. Spray with Cypermethrin or Oleum and ensure good coverage on the underside of the leaves as it is a contact insecticide.
  • In Mid to late summer trees that are under stress from either water or other insects as indicated above are prone to getting infected with Red Spider. Leaves become blotchy and a light green/yellow and covered in webbing. This causes the leaves to drop. The best thing to do in this case is to treat the first insect attack as well as the Red Spider. Red Spider can be difficult to eradicate and needs regular spraying to cure.


Sooty mould on the underside of the leaves
Sooty mould on the
underside of the leaves
Bumps on the leaves from Psylla
Bumps on the leaves
from Psylla


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