Melons Not Producing - Knowledgebase Question

Carrollton, TX
Question by MRamos1
June 1, 1998
My watermelon and cantaloupe plants have a lot of blossoms and the watermelon had a couple of small melons on them, but they dried up and died. It has been extremely hot here (around 100F). Could this be why they are not producing? How long does it usually take and is there anything I can do to help them not get too hot and dried out?


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Answer from NGA
June 1, 1998

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I don't think the heat is the problem. Both melons are grown in areas as hot and hotter than north central Texas.

Watermelons and cataloupes often produce male blooms first and later start setting female blooms (the female blooms have a miniature fruit attached to the base of the blossom). Your cantaloupes may be about to start setting female blooms if they haven't already.

Another cause of failure to set is poor pollination. If you kill the bees by using insecticides around blooming plants, you inherit their job of pollination. Since the watermelons are setting fruit, I suspect you have bees present. Nevertheless if pollination is inadequate, the failure of seeds to develop can cause a fruit to begin to grow and then shrivel and die.

Once blooms are pollinated and fruit are set they can be lost to blossom end rot. Although the condition is caused by a lack of calcium in the fruit, it is brought about by moisture fluctuations in the soil (too wet to too dry). Keep plants well watered and evenly moist. Add organic matter to the soil if it is sandy and mulch well. You also may want to have a soil test done to make sure your calcium levels are adequate. Your County Extension Office (ph# 817/565-5537) can assist you with having your soil tested. Hope this helps!

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