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Eureka lemon trees thrive in warm subtropical and tropical climates. They prefer full sun but can tolerate some shade; they are sensitive to cold and should be protected from frost.
Soil type
The optimal soil pH level for growing lemons and many other plants is 5.5 to 6.5. If the soil is too alkaline, with a pH of 7.0 or higher, the iron becomes inaccessible to the lemon tree, leading to iron deficiency. Add at least one bag of acid compost when planting.
Watering
Citrus trees need soil that is moist but not wet. The best method for watering citrus trees is to water deeply and infrequently. Water when the top 5 cm of soil is dry. Test by pressing a finger into the soil to the second knuckle and checking whether it feels dry or moist.
Mulching
Mulching around your tree with pine bark mulch makes it more appealing and allows the soil to benefit from a steady supply of nutrients released during its slow decomposition. Mulching will also keep the soil moist on warmer days, and pine bark adds a little acidity as it decomposes.
Fertilising
Eureka lemons benefit from monthly fertilizing from April through September. Yellowing leaves are usually an indication that the tree needs fertilizer. Use a slow-release, nitrogen-rich fertilizer, such as our berry fertilizer (which is excellent for citrus). Apply 1 teaspoon of our berry fertilizer every 4-5 months.
Pruning
Prune your tree periodically to keep it healthy and in shape. Cut back the branches that do not produce fruit. This will allow the side branches to spread and grow into that space. The side branches will then be strong enough to bear the weight of the fruit. Cut any branches growing towards the trunk to increase airflow between the branches. The best time to prune is after fruiting.
Pests & Diseases
Citrus trees are susceptible to aphids, red spider, and mildew. We recommend Effective Microorganisms to prevent the spread of these pests and diseases. Spray the tree down thoroughly to remove the insects first, then spray with Agricultural Neem Oil or Effective Microorganisms (EM Control) from our store.
Harvesting
Harvest the lemons when they are fully coloured and firm to the touch. Lemons can be picked as needed and are typically ripe from late autumn through winter.
