Q. I planted tomatoes in late feb. in my raised boxes..The cherry tomatoes have been doing great.. producing almost more then I can handle.The neighbors are enjoying the excess..However the larger varieties develop good size fruit but as they ripen start to turn black on the bottom..making them unusable.. Any ideas or suggestions ??
A. This is a physiological disorder (not a true disease caused
by a pathogen) called blossom end rot. It is suggested that it is caused by
irregular soil moisture causing calcium deficiency. Here is a nice discussion
by Bonnie Plants
Use mulches to reduce water stress. I like the horse bedding
pine shavings you can find at Viragrow.
Calcium sprays might help such as Monterrey's Tomato Blossom Spray available from Viragrow.
Some varieties of
tomato or more prone to blossom end rot than others. Keep track of the
varieties you are growing and try different ones. It should improve later in
the season.
Viragrow Delivers!
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