While planting pumpkin seeds, you usually only expect vines and fruit. What most people don’t know is that blossoms are necessary for fruit growth. Bright orange or yellow colored flowers that grow before the fruit appears are called pumpkin flowers.
There are two basic types: male and female pumpkin flowers. They both vary in appearance and their contributions to the growth of pumpkin fruit vary too. The flowering time can differ according to the pumpkin species and the conditions provided. The pumpkin vines need full exposure to sunlight and some essential nutrients such as phosphorous, potassium, and nitrogen to grow blossoms.
There’s a lot to know about pumpkin plant flowers such as their varying visual aspects, their growth, which of them turn into pumpkins, their applications and what happens to the pumpkin plant when you only get one gendered blossom or when they don’t open up at all? Here are all the things you need to know about pumpkin plant flowers:
Types of Pumpkin Flowers and Their Appearance
The flowers that pumpkin seeds produce are beautiful, funnel-shaped blossoms of a vibrant orange or yellow color. They may be approximately 4-5 inches wide in diameter. Pumpkin plants produce both male and female flower parts called staminate and pistillate respectively.
Male flowers appear about a week before the female ones on a narrow pumpkin stem that is about 8-12 inches long. The first open flower that you see should be a male blossom. The region directly under the blossom should consist of a long, slender stem that connects it to the vine, without any bumps at the base of the blossom. You can look directly inside the open blossom to find the central stamens. They are gathered together in a cylindrical structure.
The stamen anthers of these flowers produce the pollen that is a fine powdery substance, consisting of microscopic grains. Each grain of pollen is known to consist of a mature male haploid germ cell that can inseminate the female ovule. Although each male flower has a short life-span of several hours, new ones open each morning to lure bees. The bees then transfer the pollen from male flowers to the female ones.
Female flowers appear close to the base of the plant about two weeks after the appearance of the first male flower. They grow on a short, thick flower stock. They have a little round bulge just below the base of the bloom; it is a mini, infant pumpkin waiting to grow. The tiny, swollen ovary develops into a pumpkin fruit once is it pollinated by bees.
To confirm that the blossoms growing after the male ones are female, you can check the central portion of an open female flower to find the stigma. It looks like a non-uniform, deep indented ball. The female flowers open early in the morning just for a few hours and close themselves by late afternoon. This continues for weeks ensuring a plentiful crop. The female blossoms are responsible for fruit.
Do All Pumpkin Flowers Turn Into Pumpkins?
All pumpkin flowers do not produce pumpkins. Although male flowers play a vital role in the process, female blossoms are mainly responsible for developing fruit. Pollination is an essential factor to get fruit from your plants. It is the process of transferring pollen from a male to the stigma, ovule, flower, or plant of a female to allow fertilization.
The female flowers appear after 8 to 9 weeks after the seeds are sowed and a few days after the male ones appear. The male flowers produce the pollen that pollinates the female flowers, which have an expanded ovary at the time that transforms into a pumpkin after pollination. To hand pollinate, you can use a cotton bud to move the pollen from the males to the females. About 7 days after the female flowers appear, you will see that the pumpkins start forming.
Sometimes the female blossoms also fail to produce fruit. There are multiple reasons for this issue to occur. One of them can be poor pollination. If the pollination isn’t successful, baby pumpkins tend to wither, die, and drop from the vine. Fertilizer issues such as an abundance of nitrogen or lack of calcium can also put miniature pumpkins at risk. One more factor that can result in blossoms not turning into a pumpkin is excessive temperatures. You can prevent this by providing a layer of mulch to your soil.
Problems Related to Pumpkin Flowers
No Flowers Emerge
When growing pumpkins, patience is the key. Pumpkin flowers usually emerge about 6-8 weeks after the seeds are sowed, although it greatly depends on the climate and surrounding conditions. Controlling the levels of phosphorous, potassium, and nitrogen is highly recommended. It is known to promote and encourage blooming. Cutting back on nitrogen-based fertilizers also helps as they are known to delay blooming.
Only Male Flowers Emerge
First, make sure that you are able to differentiate between the male and the female blossoms. Now, remember that the female flowers can appear after about 2 weeks of the male ones appearing. If you have already waited for 2-3 weeks and are certain that your plant is only producing male blossoms then there are chances that you will have no pumpkins with the particular plant.
Planting the seeds too close, bad weather and soil conditions and not providing your plant with proper care can result in blossoms of a single sex.
Only Female Flowers Emerge
It is not very common for female blossoms to appear before the male ones. Although rare, this does happen and the male blossoms are likely to appear in a short period of time. This is believed to happen because of soil fertility level issues, cold snaps, phosphorous, and nitrogen levels. If you are certain that your plant is only producing female flowers, you can opt for hand pollination. Refrigerate the male blossoms in a glass of water, and pick off and transfer the pollens with a cotton bud to the females.
The Blossoms Don’t Open Up
The flowers usually open up early in the morning and close themselves in the late afternoon. Usually, the people who believe that the blossoms don’t open have missed the occasion. Rainy and cloudy weathers can also cause the blossoms not to open.
How Long Does It Take for the Flowers to Turn Into Pumpkins?
Once you’ve established the gender of your blossoms and the pollination process is a success, the pumpkin takes about 45 to 55 days to grow mature. The pumpkin grows bigger in size and the color changes according to the variety you’ve planted.
Are Pumpkin Flowers Edible?
Yes, pumpkin flowers are edible. This ingredient has significant culinary important and is used to create exquisite treats. Although pumpkin flowers are not as much in demand as the fruit itself, they are often prepared like vegetables. As they have a light, smooth texture, they can be used in various salads, soups or sprinkled over dishes like rice and quinoa. Creating dishes with male blossoms is recommended after pollination, as the female ones are responsible for fruit production.
Pumpkin Flower Applications
Pollinator species of bees play an important part in pollinating the pumpkin flowers for fruit growth. Pumpkin flowers and their sweet scent lure honeybees and thus conserve and promote bee colonies.
As discussed above, these flowers are edible and are used as vegetables to create delectable meals. They do not contain much fat, therefore, it is best to cook them in a little amount of plant-based fat to escalate the flavor and increase its nutritional value.
Pumpkin flowers release a soft, sweet, pleasant scent. The essence of these blossoms is used in the making of perfumes, colognes, and cosmetics.
Pumpkin flowers are visually appealing. The bright orange or yellow color and the smooth, delicate texture of these blossoms make them suitable for decorative purposes.
Pumpkin plant flowers play an essential part when it comes to the successful growth of pumpkin fruit. Therefore it’s best to know all about them before you start growing your own delicious pumpkins!
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