Hadn't ever heard of them other than a couple of discussions about them over on the Organic gardening forum here. Tried repeatedly to go to the website jonathangreen.com but it only redirects to to a firewall warning of "possible malware" so use with care.

From what I have read over on the organic gardening forum the products are primarily lawn care oriented and over-priced when compared to other sources of the same stuff.

Mg-Cal or a similar product might be beneficial if you know for a fact that your soil is deficient in either - which would be unusual.

Dave

Jonathan Green Products called Tomatoe Care 5-10-10 ...
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Right off the bat, that formulation (5-10-10) of fertilizer in not suitable for tomatoes and most garden vegetables to begin with. JMO

Yea,Somethin doesn't seem right with these people,Thanks for the replys