Lemons.
Lemons. iStock

Look after your lisbons

Lisbon lemons are thought to have originated in Portugal and are large, cold and heat hardy trees that produce heavy winter and spring crops. The thin skinned, juicy fruit are highly acidic and lisbon is one of the most common varieties grown in Australia. Being a sizeable tree, (growing up to 8m tall and 4m wide) lisbon is a great citrus for a large backyard. For smaller gardens, look out for dwarf grafted lisbons which reach a more manageable 3m and can be grown in a medium to large pot on a sunny balcony or deck.

When planting a lisbon lemon in the garden, choose a spot with well drained soil that receives at least six hours of sunshine a day. For potted citrus, choose a pot with good drainage holes and fill with a good quality potting mix. Keep citrus trees well watered as they settle into their new home.

For established citrus, keep deep watering and feeding during late summer, as autumn and winter fruit are continuing to develop. Moisture and nutrient stress can adversely affect the quantity and quality of the harvest.

Sweet sugary sap that's flowing through citrus plants is a magnet for sap sucking pests like scale. Scale insects can be brown, white, pink or grey and appear as small raised bumps along leaves and stems. Sometimes the scale are hard to spot themselves, however if you see sooty mould developing on the leaves (a black ash like film) or ants moving up and down the stems then they're indicators of a sap sucking insect pest like scale.


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