Lemon Tree

[megfitz]

My 6yr old lemon tree is overwintering in a frost free (unseated but bubble wrapped)greenhouse,but the leaves are not green and glossy but yellowy green. It was repotted two years ago and has given me lemons since, I have fed it with Citrus food (winter) as per instructions on jar. What’s the matter with it and what can I do.Any advice please.

[Chipchopper]

possibly a deficiency in magnesium, zinc, iron or nitrogen.
Your'e best bet is probably to buy a fertilizer specially for citrus plants.

[murraymints]

https://www.stuff.co.nz/life-style/home-property/82443887/why-are-my-lemon-tree-leaves-turning-yellow

[malagabob]

I had the same problem with a orange tree I grew in a pot from a pip. Fed it with magnesium and replaced the top few inches with fresh John Innes. Had it for many years. Sadly I lost it a few years ago.

[megfitz]

Thank you for your help,I have given it a drench of Sequestered Iron and will monitor the results. Fingers crossed it will green up.