The Q&A Archives: Bitterness in Cucumbers

Question: I have been growing cucmbers, the long English Telegraph cucumber, and they tend to become bitter. Water is sufficiently provided, almost every day and manure is worked into the soil. Why?

Answer: Cucurbitacin B and Cucurbitacin C are the names of the compounds which cause bitterness in cucumbers. These compounds are found in all plant parts, but are concentrated in the stem end of the fruit. There is some in the blossom end, as well. Different varieties of cucumbers seem to contain more bitterness than others. You can cut off the ends to remove the bulk of the bitterness, but there will still be some under the skin of the cuke. Some people believe that if they peel a cucumber from the stem end to the blossom end, they'll remove more of the bitterness. There have been scientific studies, and the direction of peeling doesn't really make any difference in the amount of bitterness in a cucumber.

Fluctuating soil moisture may contribute to bitterness in your cukes, so be sure to water regularly and deeply while the fruit is developing.

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