Pollinate Flowers

Flower pollination is the transmitting of pollen from a stamen to an ovule. Some flowers contain male and female parts, and pollination can occur by transferring pollen from the male organ to the female organ in the same plant. Pollination occurs naturally by animals, wind, or self-pollination. Sometimes, a person needs to intervene and pollinate flowers by hand.

Steps

Cross-Pollinating Flowers

  1. Identify the male and female parts of the flower. Flowers are the reproductive parts of plants. They have male parts called stamen and female parts called the pistil. The stamen produce pollen, and the pistil attaches to the ovule.[1]
    • When pollen reaches the ovule, the flower is fertilized (or pollinated).
  2. Collect pollen from one flower. Touch the stamen of one flower with a small brush or cotton swab. Some of the pollen will stick to the brush. This allows you to transfer the pollen from that stamen to another flower.[2]
    • If the flowers are far apart, scrape the pollen into a gelatin capsule. Gelatin capsules are clear tablets that you can separate and fill with herbs or powdery substances, such as pollen. When transferring pollen, you don't want to risk losing the pollen you collect.
  3. Take the pollen to another flower. With your pollen coated brush or cotton swab, touch the stigma of the other flower. The stigma is the top of the pistil that is designed to collect pollen and transfer it to the ovule. Coat the stigma as best you can with the pollen.[2]

Self-Pollinating Flowers

  1. Identify organs located on the flowers for self-pollinating plants. Each flower will have stamen to produce pollen, a stigma to collect pollen, and a pistil leading to the ovule. Identify these structures in the flower. This will allow you to collect and move pollen to and from the correct structures.[1]
    • The stamina (or stamens) look like little antennae that carry pollen.
    • The pistil is usually in the center of the flower, and the stigma is on top of the pistil.
    • The ovule can be found at the base of the pistil.
  2. Collect pollen from the stamina. Use a brush or cotton swab to touch the stamen of your flower. Be careful not to push too hard with your brush. Coat the brush as well as you can with pollen to ensure an effective pollination.[2]
  3. Transfer the pollen to the ovule. Pollen reaches the ovule by travelling down the pistil. The stop of the pistil, or stigma, is designed to collect pollen and move it down to the ovule. Use your brush to transfer pollen onto the stigma.[2]

Determining the Need to Pollinate by Hand

  1. Pollinate indoor plants. Plants have many natural pollinators. Bees, flies, and even wind serve to pollinate plants in their natural habitat. Indoor plants are sheltered from these animals and elements. To compensate for this, pollinate indoor plants by hand.
  2. Transfer pollen to outdoor plants that are not getting pollinated naturally. If your flowers on fruit trees are dying before the fruit sets in, flower pollination may not be occurring. One reason for this might be that the pollinator that typically pollinates that plant (for example a particular species of moth) does not live in your area. This can happen if you have plants that are not naturally found in your region. You will need to pollinate these plants by hand.[3]
  3. Use hand pollination to create hybrid flowers. By hand pollinating, you can select exactly which two flowers you want to cross. This allows you to create flowers that exhibit specific traits. Hybrid flowers may be a new color, grow taller, or have some other feature that neither of the parent flowers has.[4]

Video

Tips

  • You can find diagrams of flowers in gardening books or look online by searching for "diagrams of flower parts."
  • Buy gelatin capsules online, or from a health food market.
  • If insects such as bees are in your yard but your flowers aren't forming properly, your problem probably is not flower pollination. You may be over fertilizing or your flowers may be afflicted with a disease.

Things You'll Need

  • Flowers
  • Brush or cotton swab
  • Gelatin capsule

Sources and Citations

  1. ↑ 1.0 1.1 http://www.mbgnet.net/bioplants/pollination.html
  2. ↑ 2.0 2.1 2.2 2.3 http://pollinator.com/hand_pollination.htm
  3. ↑ https://www.boundless.com/biology/textbooks/boundless-biology-textbook/plant-reproduction-32/pollination-and-fertilization-190/pollination-by-insects-722-11948/
  4. ↑ http://www.exploratorium.edu/gardening/control/3ways/hybridization.html

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