My zucchini plant use to be the star of my garden. I started it from seed about a month and a half ago and now it is easily the biggest plant I have. It is in a 5 gallon container with a soil manure mixture. I water it daily for about 20-60 seconds. Lately I've noticed that the larger leaves are yellow. I had small zucchini coming it. It was so cute and green, but it stopped growing and turned yellow.
Growing Zucchini in Container: Zucchini Plant's leaves and fruit turning Yellow
This is my yellowing zucchini plant:
New healthy zucchini growing in:
Zucchini plants are heavy feeders and crave the vital NPK nutrients. N stands for nitrogen. Nitrogen promotes leave growth and vegetation. P stands for phosphorus which promotes root and shoot growth. K misleadingly stands for potassium which promotes flowering and fruiting.
Since my zucchini plant is in a pot it has quickly drained all the nutrients out of the soil manure mix. This is an important lesson for first time container growers. Since the plant has a limited supply of dirt, you must replace the nutrient with fertilizers routinely.
To organically, quickly, and effectively treat my zucchini plant I'm giving it bat guano. Mix about a tablespoon into 1/4 gallon of water (I use an old Gatorade container). Watch as the leaves transfer from yellow into a nice healthy green. Wait 3-4 days and repeat if the leaves are not the desired color. You can see the progress of the zucchini plant as it turns from yellow to green after it's treatment here: zucchini plant treatment
Now I will address the pollination problem. If your zucchini looks like the picture below then it has not be pollinated and you will have to manually pollinate the plant.
This is a picture of a male zucchini flower's stamen, which holds the pollen:
This is a picture of a female zucchini flower's pistil, which collects the pollen. The easiest way to decipher an male zucchini flower from a female zucchini flower is that the female flower will be attached to a zucchini vegitable:
To pollinate the female flower use your finger or a q-tip to collect pollen from the male flower, then wipe it on the female flower's pistils.