Why Are My Baby Cucumbers Dying On The Vine?

The first time I tried growing cucumbers they died.

The plants grew and started to flower, and I could see small cucumbers starting to grow.

But when they got to around an inch in size the baby cucumbers started to shrivel and die.

So I researched the problem, and the next year I was prepared to stop my baby cucumbers dying on the vine.

In this article, I’ll explain what’s causing it. And show you what can do to make sure you have a bumper crop of cucumbers this year.

Let’s dive in.

What Is Causing Baby Cucumbers To Die On The Vine?

The simple answer is a lack of pollination.

You see, your cucumber plants grow male and female flowers.

The female flowers are the ones that have the little cucumbers growing behind them.

While the male flowers are easily distinguished by their thinner-looking stem.

If the female flower blooms without being pollinated, then shortly after you’ll see the baby cucumber start to shrivel up. But the cucumber plant will remain healthy.

Cucumbers that continue to grow past this miniature stage are the result of successful pollination. And they will eventually grow to full size so you can pick the fruit and eat them.

So What Goes Wrong?

There are a number of things that can cause unsuccessful pollination of the female flowers.

Sometimes it can happen quite early in the growing season when the male blossoms have not yet appeared.

But it can also be caused by a lack of pollinators.

Have you noticed any bees in your garden?

Some areas have seen a decline in the bee population, making it harder to achieve natural pollination of your plant.

You’re also more likely to have problems if they’re growing high above ground level where insects are less likely to fly.

So what’s the answer?

If you’re unsure if your cucumber flowers are being pollinated, you can do it yourself by hand.

Cucumber flowers

Female cucumber flower

How To Hand Pollinate Your Cucumber Flowers

  1. First, get yourself a small, soft paintbrush.
  2. Next, find a male flower, and gently holding it at its base gently swirl the paintbrush around the center of the open flower to pick up pollen.
  3. You should be able to see the yellow pollen on the brush.
  4. Then gently apply it to the pollen-receptor in the center of a female flower.
  5. Repeat this process until you’ve pollinated all the female flowers.

Is There Anything Else You Can Do?

If you prefer pollination to happen as nature intended, you can also try to encourage more pollinators such as bees, butterflies, and hummingbirds to visit your garden.

Making your garden friendly to pollinators can be achieved by planting nectar and pollen-rich plants. With a good variety of blooming annual and perennial flowers and plants, you can make sure that pollen is available all the way through the cucumber growing season.

It’s also a good idea to stop using pesticides. These are often toxic to bees. Instead, consider gardening using more ecologically friendly methods such as trapping, hand-picking, and row covers.

If you must use pesticides, make sure you apply them carefully and don’t use them on open blossoms.

4 thoughts on “Why Are My Baby Cucumbers Dying On The Vine?”

  1. I planted cucumbers on the tenth April 2021, they were flowering in big numbers but now the small cucumbers after flowering they die and turn yellow almost the whole garden

    May you please help because am at the harvesting stage

    • Are you sure the flowers were pollinated?

      When the small cucumbers behind the female flowers die without continuing to grow this is often the problem.

      In future, you can try pollinating some of the plants by hand and see if there’s a difference.

  2. Hi Julia,
    Thank you for your article. I have two indoor cucmbers growing in my conservatory (they are now at around six feet high). They are in pots. I have lots of little inch-long fruits growing behind flowers, and none getting bigger! I read that I should remove all male flowers and ‘growth’ areas, which I have continually done. Now I’m wondering if I should have just left Nature alone. The pots are around eight inches wide and deep, and perhaps they should be deeper? Any thoughts you might have would be greatly appreciated. Many thanks. Caroline.

    • Hi Caroline, it depends on the type of cucumber plant whether or not you should remove the male flowers.


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