Black Spots

[fuggy]

what causes the black spots on the underside of tomatoes? i have three plants in the one grow bag and just the one plant is effected. thanks in antcipation

[boxtops]

lack of watering of that plant? http://forums.gardenweb.com/forums/load/tompests/msg0808234713447.html

[Clanad]

Here in the U.S. (and I suspect the U.K.) it's called "Blossom End Rot" and it's caused by uneven watering of the plant... too much one day and then letting it dry out completely. Although not fatal to the fruits one needs to find a calcium spray at you DIY/Gardening Center... just use it as directend it hsould save the affected fruits...