This is my first post and first garden this year. I believe we have made a mistake, and I'm looking for advice on how to fix.
I have 3 raised beds approximately 6' x 4' x 12". The bottom inch or so of the raised beds was soil I churned after digging out the sod. I then took the recommendation of a local landscape supply place and filled the rest of the box (approximately 11") with mushroom compost. So essentially our raised beds are filled with 100% mushroom compost.
We planted approximately 3 weeks ago, and I live near Chicago IL. All my plants now have a yellow tint, and growth is very slow. For example, a zucchini plant is only about 8-10" tall. Some even have leaves wilting near the bottom of the plant or on the tips. Rains have been fairly heavy here this spring, but I don't think over watering is an issue as i have several neighbors with gardens in very good shape.
Can anyone recommend what may be wrong? I have been told by at least one person that our problem is likely a lack of nutrients from not having a proper mix of soil with the mushroom compost. Does that make sense to the folks here? If so, how do I go about repairing it? Can I just add soil between the plants?
Hoping there is some kind of solution as I would hate to have built all my raised bed boxes and done all that digging just to fail and have to try again next year ;-).
Thanks for any advice