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Bitterness in Cucumbers
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Date Posted: Tue, Jul 01 - 1:28 am
- I'm growing cucumbers for the first time this year, and so far have only harvested a few. They are heirloom straight 8 cucumbers I started from seed. I'm harvesting them at about 6 inches long. I cut the ends off when I slice them to avoid bitterness, but they still seem to taste quite bitter and soapy. I'm not spraying them with anything, and I was them well with water when I harvest them. What might be making them bitter?
- Thanks for reaching out to the Richmond Master Gardeners! Bitterness in cucumbers—especially heirloom varieties like Straight 8—is a fairly common issue, although frustrating, and it’s usually due to the natural compounds called cucurbitacins. A few reasons you might be experiencing bitterness: First off, we have to think about environmental stress, especially given the extreme heat and big down pours we have been having. Cucurbitacin levels tend to rise when the plants are under stress and common stressors for cucumbers include: Inconsistent watering (periods of drought followed by heavy watering), high temperatures, and also poor soil fertility or nutrient imbalance. Straight 8 cucumbers tend to be prone to bitterness, especially in hot and dry conditions. Try to keep soil moisture even by watering regularly (especially during hot spells), and consider using mulch to conserve moisture and keep soil temps steady. There's a chance your cucumbers are sitting on the vine a little too long and getting a little overripe. If you notice any yellowing of the skin or a hard waxy exterior, they are likely getting a little too ripe. You could try harvesting a little sooner, maybe when they are 5 inches, to see if that helps. As you already seem to know, the bitter components are most concentrated at the the stem end, in the skin and just under the skin. In addition to trimming the end of off, you could try peeling the cucumbers. I've also heard of people soaking them in cold salted water for about 40 minutes once they are peeled. I haven't tried this myself, but I've heard it helps to reduce the bitterness. Their are some hybrid varieties that are bred to reduce bitterness. If none of the above ideas help you to reduce bitterness, you could try growing a hybrid variety next time and see if that helps. Good luck! We hope you are able to enjoy your cucumbers!