Zucchini plants

[Wanttogarden]

Hello there I am looking for some advice. I have a total of 5 zucchini plants that do produce some Zucchinis but then some stay small and turn yellow. What can cause this? It is happening to all 5 plants.

 

[Chuck]

The ones that stay small, do not grow and do not rot on the blossom end have POOR pollination. If the end rots it is because the plant is unable to uptake the calcium or in some cases it is a lack of calcium. A soil test will tell you if you have enough calcium present but most soils have plenty of calcium. The only problem is the calcium is unavailable as uptake for the plant and this problem is known as Blossom End Rot. Some gardeners add calcium but in some soils, such as mine, my soil already has an over abundance of calcium. To make the calcium available to the plant I add a couple of handfuls of Epsom Salts (magnesium sulfate) around the base of the plant. I don't know how or why it works but in my soil if I don't use it my tomatoes, squash, melons all get BER, but without it I loose ALL of my tomatoes and melons and a large portion of squash. I also loose a smaller portion of peppers and cucumbers.

 

[Oliver Buckle]

I dig a hole and fill it with compost for my courgettes, I have even planted one on top of a compost heap before, they like plenty of food and water. I have never had as much success growing in pots and don't much, but when I have I have found just about daily watering is needed. That, of course, can wash out the nutrients if you are over liberal, little and often is the order of the day.
I grow two plants in case one fails, it rarely does and there is usually an excess, five plants you should be knee deep in them.

 

[Wanttogarden]

This is from one plant. Not sure why they are turning yellow and dying.

 

[Chuck]

This is from one plant. Not sure why they are turning yellow and dying. View attachment 91413

Well, it is not Blossom End Rot so it must be poor pollination.

 

[DirtMechanic]

If they are very new then some of the female flowers will often initially fail but it will straighten out as the plant matures. When did you plant? Also heat is no friend of pollen but I have more trouble in that area with other plants than courgettes.

 

[Chuck]

Did the flowers ever open? The picture of them looks like they haven't opened and they look very small.

 

[2guysnagarden]

They look pretty young and did have a chance to open yet. Did they fall off or did you remove them?

 

[Wanttogarden]

Thanks for all the replies! I did not get notifications letting me know I had replies and didnt bother to check. Sorryyy. But they do not even open and turn yellow so I cut off.