Zucchini/Squash rotting on the end Jul 22, 2011 11:09:07 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by jason on Jul 22, 2011 11:09:07 GMT -5 If your zucchini/squash are rotting on the end (Blossom End Rot) they are likely not being pollinated.See this thread here livingtowers.proboards.com/index.cgi?board=pollinate&action=display&thread=25 for information on hand pollinating them.