Over wintering Citrus
All citrus plants need winter protection, and for high qualities batch a frost-free greenhouse (10-15c/50-59f) or airy conservatory is best, however, a sunny windowsill in an unheated room is also a good idea. Water the citrus plants moderately in winter and allow the surface to dry out between watering.
It is important to keep the humidity at a high level especially in homes with central heating. Over-watering can cause leaves to yellow and fall.
| Citrus | Min night Temp | Over-wintering advice |
| Lemon
(Citrus Limon) |
5-10c
(41-50f) |
Very sensitive to temperature change |
| Lime
(Citrus Aurantiifolia) |
12-16c
(54-61) |
Young growths can be killed by frost |
| Makrut Lime
(Citrus x meyeri ‘meyer’) |
15c
(59f) |
Over winter in a bright place |
| Sour of bitter Orange
(Citrus aurantium) |
5-10c
(41-46f) |
Can stand lower temperatures and can withstand some frost |
| Calamondin
(X Citrofortunella microcarpa, Citrus mitis)
|
12-16c
(54-61f) |
Dislikes to much winter warmth keep cool and bright |
| Grapefruit or Pomelo
(Citrus x paradise)
|
10-12c
(50-54f)
|
Sensitive to low temperatures. Keep above 10c (50f) |
| Mandarin Orange
(Citrus reticulate mandarin group)
|
5c
(41f) |
One of hardiest citrus, but likes to be kept cool and bright |
| Sweet Orange
(Citrus sinensis)
|
5c
(41f) |
Relatively hardy but likes as much sunlight in winter as possible |
Blue Iris Landscapes hope this guide to looking after your citrus plants over the winter period has helped, however, if there are any further questions that you would like to know about citrus plants please contact us on: –
Free Phone: 0800 0937926
Head Office: 01782 396168
Email: info@blueirislandscapes.co.uk