Moving a lemon tree inside is something most gardeners will consider at some point, especially during the colder months of the year. But, when is the right time? The short answer is: it depends. The right time to move a lemon tree inside depends on several factors. Here’s what to consider when making the decision:
Temperature
An adult lemon tree can tolerate temperatures of 36-38°F (2-3°C). Temperature levels below this can have severe effects, leading to damaged leaves and branches. If the temperature outdoors drops below 36°F, it’s time to move the tree indoors. Moving it early will give the tree time to adjust to indoors conditions.
When temperatures drop below freezing, the tree should be covered with blankets or plastic. However, it should be moved indoors as soon as the temperature starts rising. Otherwise, the cold may damage its roots. Before moving the tree, however, make sure the temperature inside is around 55°F (13°C)
Location
Where the lemon tree is placed also has a big impact on whether it should be moved indoors. An outdoor tree should be moved if it’s in an exposed location, like a balcony or a patio. These locations can be subject to stronger winds and bigger fluctuations in temperature.
If the tree is in a sheltered spot, it may be possible to leave it outside. But, even if the temperature is mild and there is good shelter, the tree may still need to be moved. Cold air from an adjacent wall or a window can damage the tree, which is why it’s better to move it before the cold is too intense.
Caring for the Tree
Lemon tree care indoors is quite different than care outdoors. Indoor trees will need more water and fertilization, while they will be subject to fewer pests. A lemon tree that has been outdoors and then moved inside may need some time to adjust to the new environment. That’s why it’s important to prepare everything beforehand.
Take a look at the soil, the pot, and the tree’s branches. Make sure everything is clean and free of pests and diseases before bringing it indoors. Make the appropriate adjustments to the soil and the pot if needed, and apply pruning or prevention measures to protect the lemon tree.
Subtle Changes
In some cases, moving the lemon tree is a choice rather than a necessity. Subtle changes can also be observed in the tree’s behavior before the cold comes, like fruits dropping prematurely or yellow leaves. These signs are signals that it’s time to take action.
If the leaves start becoming mottled and their color becomes yellowish green, it’s a sign that the tree needs more heat. Taking it indoors will help the tree get back to its full lushness and provide the optimal weather conditions.
Check the Plant
Whenever the lemon tree needs to be moved indoors, make sure to check it thoroughly. Inspect the stems and leaves for any infestations, and pay extra attention to the underside of the leaves. If there are caterpillars and eggs, they should be removed as soon as possible.
Even if the plant has been given extra attention, any unexpected cold can lead to further damage. Moving it indoors will help protect the tree from such unexpected cold.
Protect from Insects
When the lemon tree is moved indoors, there is a bigger chance of pests and insects entering the house. To prevent them, it is important to use insect traps and sprays and be mindful when watering. Insects are attracted to moist environments and excessive watering may be a catalyst for a pest outbreak.
It’s also important to keep the house clean. Regularly dust the leaves and vacuum around the tree. To further prevent bug infestation, try washing the tree with an insecticidal soap once a month.
Fertilization
Fertilization is very important for lemon trees and can help them thrive. If the tree is moved indoors during winter, it needs more nutrients. Start by cleaning the roots and adding compost to the soil. Use mulch to keep the soil moist and controlled.
Fertilizers applied to the tree should be made of slow-release nitrogen. Reapply fertilizer every six months and keep an eye on the level of nutrients in the soil. Make sure to test the soil regularly and adjust the amount of fertilizer accordingly.
Light Requirements
Lemon trees need lots of light to grow and bear fruits. When moving it indoors, look for a spot that is bright, but away from direct sunlight. The tree will receive enough light, without receiving too much sun that may dry out the leaves or make it too hot for the tree.
If a spot in the house doesn’t get enough light, a lamp can be used to supplement natural light. Some types of lights, such as florescent or LED, work well for plants and can be hung 30 cm (12 in) above the tree.
