Winterizing your olive trees

It might come as a surprise, but what is most fatal to olive trees in winter isn’t the cold – it’s the moisture.

If the cold sets in gradually and the air is dry, olive trees are hardy down to 0 to 4°F (-15 to -18°C).

But if moisture and water join the game, all is lost.

Let us see how olive trees can be protected during winter

You’ll have to proceed differently depending on whether your olive trees grow in the ground or in a pot or container.

Your olive trees are in the ground

If you live in the South, you shouldn’t worry, your olive trees will surely resist winter conditions.

However, if you live North or in a region where it rains a lot during winter, you must follow a few steps to protect your olive trees.

  • With garden soil, create a slope around the base of your olive trees so that water would not flow near their roots.
  • It is important to evacuate water as far as possible from your olive trees in winter: nothing is more dangerous to your tree.
  • Mulch the base of the olive trees to protect roots from freezing.

Your olive trees are in pots

Once again, if you live in the South, nothing much is needed.

  • Place your olive trees in the sun.
  • Water only if the soil is completely dry, and then only small amounts of water.

However, if you live further North,

  • Best is to place your olive trees in a cool and well-lit place where it never freezes.
  • The winter cold in these areas is also very moist, so you must do your utmost to protect your olive trees from moisture.

If you cannot bring your olive trees indoors,

  • Never bring your olive trees indoors in winter.
  • Outside, bring them as close as possible to a window so that they may benefit from the warmth of the house.
  • Mulch the base of your olive trees to protect them from the cold.
  • Wrap the pots with a thick cover, and avoid letting rain fall in.
  • Cover with horticultural fleece, keeping buffer space all around so no leaves touch it. Again, the goal here is to avoid condensation touching the plant since it is a source of moisture.
  • Water as little as possible, and then only if no rainfall reaches the plant.

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Credits for images shared to Nature & Garden (all edits by Gaspard Lorthiois):
Olive tree in winter shared by André P. Meyer-Vitali under © CC BY 2.0

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