My cannas are turning a pale light green almost yellow. What is wrong we have had lots of rain lately.?
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yellow usually indicates a nutrient deficiency requiring either iron or fertilizer.. This can be exacerbated by the soil pH as that can inhibit nutrient absorption.. Usually too much water causes born and rot not yellow.. Is the soil sopping wet or just wet? If it is water related, the only thing you can do is dig them up to elevate them and or raise the entire bed.
feed 'em, lots of rain means the nutrients have washed away, organic and or chemical or a little of both 10.10.10 will do, just a little...everything in moderation!
Sounds like a lack of Nitrogen. Try a good fertilizer. Blood Meal is all nitrogen so you could try that, but I would try something that is more complete, with the highest nutrient being Nitrogen. (Nitrogen is the first number on a fertilizer label such as 12-0-0 as in blood meal).
yellow is a sign of too much water
When it's yellow, let it mellow, when it's brown, soak it down
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