All my plants are grown in tubs, but over the last month a lot of my plants are turning a very pale yellow.
Could it be blight ?
Any tips are welcome !
What kind of plants?
Could be lack of water, or of nitrogen; or just the end of their life....
They are all well watered and fed , I have even tried a seaweed plat tonic with iron.
The plants that are turning yellow seem to be spreading whatever the problem is on to the plants in the tub next to them , so it is happening in clusters, that's why I thought it could be blight or another fungal type problem.
I'll try to get a photo on , so you can see !
Indeed - sounds like a disease problem. What kind of plants? Potatoes and tomatoes get blight at this time of year for example...
The plants are Scabiosa , St johns wort, Mint, Marjoram, Creeping jenny, Sage, Fatsia, Tomatoes, maybe they have all just give up waiting for summer!
hmmm... if it's affecting lots of different species.....
Very few diseases affect different species of plants and not many of those plants are particularly prone to insect attack - it's far more likely to be a cultural problem.
I'd go with over-watering and possibly either under or over feeding as well.
The compost isn't over wet and I feed every fortnight ? Thank you
Some of my plants look like this due to overwatering which leaches nutrients from the ground, my water is coming from the sky . If you aren't watering too much they probably need a good feed, GW tonight was saying about plants working hard at this time of the year
Are you letting the compost dry out between waterings? Those plants shouldn't need watering until the soil an inch below the surface is really dry.
Also none of those need feeding very much. When they were put in those containers the compost should have contained enough feed to last for at least six weeks. Then perhaps a dose of general seaweed based fertiliser in the summer would have been all I'd have given them until next spring.
I think that a combination of over-watering and over feeding has resulted in an imbalance of nutrients in those pots.