“Zippering” is what to google, if you’re talking about that big tan seam.
(The little dark spots can be caused by any sucking insect — aphids included, but also stinkbugs, etc.)
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“Zippering usually occurs when the anther of the tomato flower sticks to the developing fruit and produces a scar as the fruit grows, extending from the blossom end to the stem.” – Missouri botanical garden
Addendum: “Sometimes an open hole develops in addition to the scar. The only control is to select varieties that are less prone to zippering.” – Missouri botanical garden
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“Zippering” is what to google, if you’re talking about that big tan seam.
(The little dark spots can be caused by any sucking insect — aphids included, but also stinkbugs, etc.)
“Zippering usually occurs when the anther of the tomato flower sticks to the developing fruit and produces a scar as the fruit grows, extending from the blossom end to the stem.” – Missouri botanical garden
Addendum:
“Sometimes an open hole develops in addition to the scar. The only control is to select varieties that are less prone to zippering.” – Missouri botanical garden