How to Use plant hormone in a Sentence

plant hormone

noun
  • The cause for the strange blooms is plant hormones that are out of balance.
    — Rita Perwich, San Diego Union-Tribune, 6 May 2023
  • Some even produce plant hormones.
    — Anna Marija Helt, JSTOR Daily, 17 Sep. 2025
  • Rooting hormone contains plant hormones called auxins that help the plant root faster.
    — Maryal Miller Carter, USA TODAY, 22 June 2023
  • Ethylene is a natural plant hormone that triggers produce to ripen faster.
    — Karla Walsh, Better Homes & Gardens, 3 Nov. 2023
  • Ethylene is a natural plant hormone that triggers produce to ripen faster.
    — Karla Walsh, Better Homes & Gardens, 3 Nov. 2023
  • Auxin is a plant hormone that is involved in regulating plant growth and the plant synthesizes it as needed.
    — oregonlive, 18 Mar. 2023
  • Ethylene is a plant hormone that triggers fruit to ripen, according to Deering.
    — Olivia McIntosh, Martha Stewart, 3 Mar. 2026
  • Spuds and apples can give off high levels of ethylene gas (a natural plant hormone), which can trigger spouting.
    — Rita Pelczar, Better Homes & Gardens, 24 Aug. 2022
  • Encourage monopodial orchids to make a keiki with a liquid plant hormone called keiki cloning paste.
    — Leanne Potts, Better Homes & Gardens, 8 Apr. 2026
  • When cold treatment is cut short, the development of plant hormones that regulate flower height is disrupted as well.
    — Markis Hill, Kansas City Star, 25 Feb. 2026
  • The onset of vernalization, or dormancy, is triggered by a plant hormone, then fruit-bearing vines, trees and canes begin to rest.
    — Margaret Lauterbach, idahostatesman, 21 Feb. 2018
  • Spuds and apples can give off high levels of ethylene gas (a natural plant hormone), triggering spouting.
    — Rita Pelczar, Better Homes & Gardens, 24 Aug. 2022
  • That cantaloupe is sensitive to ethylene, a gas that acts as a plant hormone to regulate growth and development.
    — Debbie Arrington, sacbee, 22 Sep. 2017
  • Coconut contains a type of anti-inflammatory plant hormone called cytokinins.
    — Nick Blackmer, Verywell Health, 12 Apr. 2024
  • The idea that plant hormones—such as genistein, the primary phytoestrogen in soy—can interfere with mammalian development is not new.
    — Deborah Blum, Slate Magazine, 3 Aug. 2017
  • Tomatoes are sensitive to ethylene, a natural plant hormone that contributes to ripening.
    — Miri Talabac, Baltimore Sun, 28 July 2022
  • Others influence plant hormones that control growth, reproduction, and defense.
    — Anna Marija Helt, JSTOR Daily, 17 Sep. 2025
  • The bacteria can suck nitrogen from the air to provide crucial minerals for the plants, protect the plants against pathogens, make the plants more drought-resistant and increase plant hormone production.
    — Michelle Shen, USA TODAY, 6 Nov. 2021
  • During ripening, bananas naturally produce ethylene gas, a plant hormone that helps convert starches into sugars, softens the texture, and deepens the color of the bananas.
    — Katie Rosenhouse, Southern Living, 31 Dec. 2025
  • The other chemicals include vitamins, minerals (including the electrolytes sodium and potassium), and plant hormones like cytokinins (that may benefit the body in various ways).
    — Alexandra Hansen, Quartzy, 5 Nov. 2019
  • By studying patterns of the plant hormone auxin, researchers have discovered that auxin concentrations cause asymmetry at the molecular and anatomical levels, altering gene expression and leaf shape.
    — Discover Magazine, 2 May 2018
  • By studying natural variations in root structure and the genetics associated with these variations, the team homed in on a previously unknown biological pathway that regulates auxin, a plant hormone that helps control root growth.
    — San Diego Union-Tribune, 11 July 2019

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'plant hormone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Last Updated: