Wiltshire, United Kingdom
I have a courgette enigma: I have grown from seed two yellow ('soleil') plants and two green ('zuccini') plants. One green and one yellow are in a raised bed (A) with manure, the other yellow and green are in a new bed (B) (I previously had chickens there) with the same manure.
In bed A both yellow and green plants are doing very well, while in bed B the yellow one isn't doing well yet the green one is and they are side by side. This yellow one's leaves have turned yellow with a little green left in the veins and a little bit of mozaic effect with one young with yellow dots on and new leaves are affected as they unfold and grow as well as the old ones. It is, I will add, producing many tiny courgettes while the green one isn't yet.
I have looked at potential nutrient deficiencies inconclusively but just cannot understand why this yellow plant is suffering while the green one right next to it isn't. (None had this problem last year, by the way).
Any wisdom would be apreciated,
- 16 Jun, 2012