Growing Citrus
Growing citrus trees can be a rewarding experience, especially when you enjoy the juicy fruits they produce. Whether you’re planting a lemon, orange, or lime tree, follow these guidelines to ensure success:
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1. Choosing the Right Citrus Tree
Before you start planting, consider the following factors:
Location: Choose a well-drained, sunny site protected from strong winds. Citrus trees thrive in full sun, so find the brightest spot in your garden.
Soil: Prepare the soil by enriching it with compost or well-rotted manure. Citrus trees prefer well-drained soil, so avoid damp or boggy areas.
Variety: Select a citrus variety that is suited to your climate, soil type, and available space. Common choices include lemons, oranges, and limes. Navel oranges are typically seedless, while Valencia oranges are known for their juiciness.
2. Planting Your Citrus Tree
Follow these steps for successful planting:
Prepare the Soil: Mark out an area (approximately 1.5m²) where you want to plant your citrus tree. Remove grass and weeds, then enrich the soil with compost or well-rotted manure. If your soil is heavy clay, mix in some gypsum to improve drainage.
Dig the Hole: Dig a hole twice the size of the root ball. Gently tease the roots of the citrus tree before placing it in the hole. Position the root ball so that the top is level with the surrounding soil.
Backfill and Water: Backfill the hole with soil and press the soil to firm it in. Create a circular ridge of soil around the base of the tree to form a basin and hold water. Water the tree thoroughly after planting.
Mulch: Cover the soil with mulch, but ensure it doesn’t rest directly against the tree trunk to prevent collar rot.
Fertilise: Wait about a month before applying organic fertilizer around the base of the tree. Alternately, use Organic Xtra in August/September and a complete Citrus Food in February.
Watering: Keep citrus trees well-watered, especially when young fruit is forming in spring and early summer. Slowly water under the tree for a deep soaking, usually once a month during summer. Adjust frequency if there are drying winds.
Frost Protection: In colder climates, protect your citrus tree from frost by spraying it with Envy during winter. Wrapping the trunk with hessian or newspaper and using frost cloth can also help.
Heat Stress: Water deeply in the morning or evening to avoid heat stress. Consider using Envy Anti-transparent during summer to reduce moisture loss from leaves.
4. Pruning
Light Pruning: Citrus trees generally don’t require heavy pruning. Remove dead wood and trim back water shoots by one-third to half their length.
Revitalising Old Trees: Heavy pruning can rejuvenate an old established tree.
5.Pests and Diseases
Watch out for pests like Leaf Miner, Scale, Gall Wasps, Mites, Scab and Bronze Citrus bug. Regular inspection and appropriate treatments can help keep your citrus tree healthy.
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Leaf Miner:
Symptoms: Leaf miners are tiny larvae that tunnel through the leaves, creating winding trails (mines). These trails appear as silvery or brownish lines on the leaves.
Control: Regularly inspect leaves for signs of leaf miner damage. Prune affected leaves and dispose of them properly. You can also use neem oil or insecticidal soap to control leaf miners.
Scale Insects:
Symptoms: Scales are small, immobile insects that attach themselves to stems and leaves. They appear as waxy bumps or shells.
Control: Remove scales manually or use horticultural oil to suffocate them. Natural predators like ladybugs can also help control scale populations.
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Gall Wasps:
Symptoms: Gall wasps cause abnormal growths (galls) on leaves and stems. These galls can be round or elongated.
Control: Prune and destroy affected branches. In severe cases, consult a professional for treatment options.
Mites:
Symptoms: Mites are tiny arachnids that suck sap from leaves, causing stippling (tiny yellow or white spots).
Control: Spray affected leaves with water to dislodge mites. Use insecticidal soap or neem oil if necessary.
Scab:
Symptoms: Scab appears as raised, rough patches on fruit and leaves.
Control: Maintain good hygiene by removing fallen leaves and fruit. Apply copper-based fungicides during the growing season.
Brown Rot:
Symptoms: Brown rot affects fruit, causing them to rot and become mushy.
Control: Remove infected fruit promptly. Prune affected branches and improve air circulation.
Melanose:
Symptoms: Melanose results in dark, raised spots on fruit and leaves.
Control: Prune affected branches and apply copper-based fungicides.
Root and Collar Rot:
Symptoms: Root and collar rot affect the base of the tree, causing wilting, yellowing leaves, and eventual decline.
Control: Ensure proper drainage to prevent waterlogged soil. Avoid piling mulch against the trunk. Consult a professional if you suspect root or collar rot.
Remember, early detection and proper care are essential for maintaining healthy citrus trees. If you notice any issues, trim affected growth, seal it in a plastic bag, and bring it in for advice and solutions.