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Can lemon trees survive outside during winter in the UK?
Most lemon trees are not hardy enough to survive a British winter outdoors and must be brought inside before the first frost. They should be kept in a cool, bright room away from central heating radiators, which dry out the air. A temperature between 10°C and 15°C is ideal for their winter dormancy.
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When is the best time to prune a lemon tree in the UK?
The best time to prune is late winter or early spring, just before the main growing season begins. Remove any dead, crossing, or overcrowded branches to improve air circulation and light penetration. Light pruning can be done throughout the year to maintain the shape of the tree.
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Why do small lemons drop off the tree before ripening?
Fruit drop is often caused by environmental stress, such as sudden temperature changes, draughts, or inconsistent watering. If the tree produces more fruit than it can support, it will naturally shed some to conserve energy. Ensure stable conditions and regular feeding to help the tree retain its fruit.
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Why are the leaves on my lemon tree turning sticky?
Sticky leaves are often a sign of pests such as scale insects, aphids, or mealybugs, which excrete a substance called honeydew. Inspect the undersides of leaves and stems for small bugs or brown bumps. Wipe the leaves with a damp cloth or use an organic insecticidal soap to treat the infestation.
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Do lemon trees need full sun to produce fruit?
Yes, lemon trees require plenty of bright light and benefit from direct sunlight for at least six to eight hours a day. During the British summer, moving the tree outdoors to a sheltered, sunny spot can encourage growth and fruit production. In winter, place it near a south-facing window or use grow lights if natural light is insufficient.
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When should I feed my lemon tree?
Apply a high-nitrogen citrus fertiliser during the growing season, typically from spring through to late summer. In winter, stop feeding or switch to a winter-specific feed if the temperature remains high enough for active growth. Follow the manufacturer's instructions carefully to avoid over-feeding, which can damage the roots.
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How often should I water my indoor lemon tree?
Water your lemon tree deeply when the top few centimetres of soil feel dry to the touch, rather than sticking to a rigid schedule. Reduce watering significantly during the winter months when the tree is dormant to avoid root rot. Always ensure excess water can drain away freely from the pot.
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What is the best type of soil for potting lemon trees?
Lemon trees thrive in well-draining, slightly acidic soil or specialist citrus compost. It is important to ensure the pot has drainage holes to prevent waterlogging, which can rot the roots. Adding grit or perlite to the compost can further improve drainage and soil structure.
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Why are the fruits on my lemon tree falling off?
Fruit drop can occur if the tree is stressed by erratic watering, low temperatures, or insufficient nutrients. Young trees may also drop fruit naturally to conserve energy for structural growth. Ensure consistent care and adequate feeding to help the tree retain its fruit.
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Can citrus trees be successfully grown in containers?
Yes, many citrus varieties thrive in pots, especially in climates where they need to be moved indoors for winter. Container growing allows for better control over soil conditions and plant placement. This method is popular for varieties like Meyer lemons or calamondin oranges.
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