• Blog
    • General Gardening
    • Gardening for Children
    • Gardening Videos
    • Insect Pests
    • Landscape Design
    • Trees
    • Vegetables & Fruits
    • Weeds
  • Events
    • Upcoming Events
    • Event Announcements
  • Gardening Videos
  • Resources
    • Western North Carolina Gardening Guide
    • Online Resources
      • Soil Testing Information for Home Gardeners
    • Speakers Bureau
  • Garden Helpline
    • Collecting Samples of Plants and Insects
  • The Learning Garden
  • About Us
    • About Us
      • How to Become an Extension Master GardenerSM Volunteer
    • The Association
    • Contact Us
    • Speakers Bureau
    • Sponsors
      • Sponsors: 2019 WNC Gardening Symposium
    • Donate
Extension Master GardenerSM Volunteers of Buncombe County
Blog / Vegetables & Fruits / Flicking the tomato flower can help tomato fertilization.

Flicking the tomato flower can help tomato fertilization.

June 10, 2013

Tomato --flower to fruit
Tomato –flower to fruit

Gardeners are often concerned that while their tomato plants have flowers, very few small fruits develop from them. And often the question is “where are the pollinators?” Actually,  the weather has more to do with it than pollinators.

Tomatoes have perfect flowers, meaning that each flower has both male-stamen- and female – stigma- parts and are normally self-pollinating.  One way the weather helps is by providing the shaking or motive power that causes the pollen to make the move from one to the other.

Also according to a Washington State Extension bulletin, optimum fruit set occurs within a very narrow night temperature range of between 60° F and 70° F. When tomato plants experience night temperatures lower than 55° F or above 75° F, interference with the growth of pollen tubes prevents normal fertilization. The pollen may even become sterile, causing the unpollinated blossoms to drop.

High daytime temperatures, rain, or prolonged humid conditions also hamper good fruit set. If the humidity is too low, the pollen will be too dry and will not adhere to the stigma. If the humidity is too high, the pollen will not shed readily. Pollen grains may stick together, resulting in poor or no pollination.

Pollen is mostly shed between 10:00 a.m. and 4:00 p.m. on dry, sunny days.  So, if the gardener wants to assist in the pollination processes rapping each flower sharply with a finger flick just before nap time may encourage the movement of the pollen and the development of the fruits.

Cat Faced Tomatoes
Cat Faced Tomatoes

By the way, have you ever wondered why large-fruited tomato cultivars are sometimes “catfaced” but not the small-fruited ones? This is due to a failure of complete fertilization of the ovule. The larger fruit demands more complete fertilization. This is not a disease but a physiological disorder.

Article written by Glenn Palmer, Extension Master Gardener Volunteer.

Share this:

  • Click to share on Facebook (Opens in new window)
  • Click to share on Pinterest (Opens in new window)
  • Click to share on Twitter (Opens in new window)
  • Click to share on Pocket (Opens in new window)
  • Click to email a link to a friend (Opens in new window)

Categories Vegetables & Fruits Tags cat-facing, fertilization, humidity, pollination temperature, poor pollination, tomatoes

NC Cooperative Extension; Empowering People, Providing Solutions

Blog posts written and published by Extension Master GardenerSM volunteers in Buncombe County.

Subscribe via Email

Enter your email address to subscribe to our blog and receive notifications of new posts by email.

Join 3,693 other subscribers

Recent Posts

  • Dramatic Winter Damage? What Should I Do?
  • 2023 School Garden Grants Available: Applications Due February 3
  • What’s THAT Evergreen? Can I grow it?
  • A Gardening Guide for Our Mountains: The Perfect Holiday Stocking Stuffer
  • Non-native Invasive Plants: Nandina domestica (Heavenly Bamboo)

Categories

  • Events
    • Extension in Buncombe County
    • Extension Master Gardener Plant Clinic
    • Lectures & Seminars
    • Plant Sales
    • School Garden Grants
  • Flowers
    • Bulbs
    • Perennials & Biennials
    • Roses
    • Wildflowers
  • Gardening for Children
  • Gardening Videos
  • General Gardening
    • Installation & Planting
    • Mulch
    • Native Plants
    • Propagation
    • Seasonal Chores
    • Soils & Fertilizers
  • Houseplants
  • Landscaping
    • Firewise Landscaping
    • Landscape Design
    • Site Conditions
    • Water Management
  • Lawns
  • Pest Management
    • Integrated Pest Management (IPM)
    • Invasive Plants
    • Pesticides
    • Weeds
  • Plant Diseases
  • Plant Insects
    • Beneficial Insects
    • Insect Pests
    • Invasive Insects
  • Shrubs
  • Special Gardens
    • Container Gardens
    • Herb Gardens
    • Pollinator Gardens
    • Rain Gardens
    • Shade Gardens
  • Trees
  • Vegetables & Fruits
  • Wildlife

Contact Us

Buncombe County Extension Office
49 Mount Carmel Road
Asheville, NC 28806
Helpline 828-255-5522

Events

Keep up with our events by subscribing to the blog or checking our Events Calendar.

Explore the Archives

Back to Top

Copyright © 2023 Extension Master Gardeners of Buncombe County. Privacy Policy.