ERICA'S NOTEBOOK
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Germination

​
​Erica's Original Notes
Germination starts when colloidal inhibition is overtaken by osmotic forces and water is taken in to the seed; that is, in plain English, when the seed coat has broken down and water enters the seed to stimulate growth.

Desert annual seeds (desert ephemerals) only respond to a downpour of rain which is sufficient to complete their life cycle. Winter annual seeds respond to water and lower temperatures. Summer annual seeds respond to water and heat. Other influences on germination of seeds are daylight sensitivity, when light is needed (birch and foxglove), and darkness (lily family amongst others).

Winter cold is needed by some seeds to trigger the cycle; spruce seed has a hibernation spell to prevent germination and winter kill.

A seed is a safe deposit for the plant's future; a 1000-year-old lotus seed, found in a bog germ­inated! (See Note 1 below.)

See also Erica's notes on Seeds.

NOTES Updated 2013 (RP)
1. SHEN-MILLER, J., M. B. MUDGETT, J. W. SCHOPF, S. CLARKE, AND R. BERGER. 1995. Exceptional seed longevity and robust growth: ancient Sacred Lotus from China. American Journal of Botany 82: 1367–1380.

Shen-Miller obtained seven lotus seeds from the Chinese village of Pulantien in 1982 from the Beijing Institute of Botany. She determined the dates of six of them and germinated four of them. The oldest was calculated to be 1,288 years old, give or take 271 years. The youngest was 95 years old. She planted the 332-year-old seed in a tub in the courtyard of her home, where it sprouted many leaves, grew faster than modern lotus plants and lived for nine months.
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  • Home
  • Updates
    • What's New
    • Garden Stories >
      • Garden Story Index
    • Self-Guided Tours
    • Gardener Walks
    • Curator Updates
    • Guide Training
    • Walks & Talks >
      • Walks and Talks 2025
      • Walks and Talks 2024
      • Walks and Talks 2023
      • Walks and Talks 2022
      • Walks -Talks 2021 & Zoom Tips
    • PDFs of Updates, Tours, & Talks >
      • Self-guided Tours (PDF)
      • Gardener Walks (PDF)
  • Plant IDs
    • ID By Flower Color >
      • Red Flowers
      • Pink Flowers
      • Orange Flowers
      • Yellow Flowers
      • Green Flowers
      • Blue Flowers
      • Purple Flowers
      • White Flowers
    • ID By Type >
      • Annuals
      • Berries-Fruits-Nuts
      • Bulbs, Corms, Rhizomes, Tubers >
        • Bulbs
        • Corms
        • Rhizomes
        • Tubers
      • Ferns
      • Grasses
      • Medicinal Plants
      • Native Plants
      • Perennials >
        • Peonies
        • Salvias
      • Rhododendrons >
        • Rhodendron Erica Notes
      • Shrubs >
        • Calycanthus
        • Hydrangeas >
          • Hydrangea Background
        • Peonies >
          • Peonies-Overview
        • Rhododendrons
        • Roses >
          • Rose Background
      • Trees >
        • Conifers >
          • Cypress
          • Firs
          • Pines
        • Conifer Connect Exhibit
        • Deciduous Trees >
          • Dogwoods
          • Ginkgos
          • Magnolias
          • Witch Hazels
        • Native Trees
        • Tree of the Month
  • In the Garden
    • Map and Collection Lists >
      • Plant Locator
    • Art in the Garden >
      • Symposium & Exhibitions
    • Building and Grounds >
      • Bridges
      • Formal Rose Garden Hardscape and Art
      • Grotto Area & Black Garden
      • Korean Pavilion
      • Maze
    • Gardener Assignments
    • Collections >
      • Ash Collection
      • Camellia Collection
      • Rhododendron Walk
    • Gardens >
      • Gardens A-D >
        • Alma VanDusen Garden
        • Backyard Bird Garden
        • Bentall Garden
        • Black Garden
        • Canadian Heritage Garden >
          • Bees
          • Canadian Heritage Orchard
        • Cascadia Garden
        • Cherry Grove
        • Chilean Garden
      • Gardens E-H >
        • Eastern North America Garden
        • Fern Dell
        • Formal Rose Garden
        • Fragrance Garden
        • Heather Garden
        • Herb Garden
        • Heritage Rose Garden
      • Gardens I-P >
        • Laburnum Walk
        • Livingstone Lake
        • Meconopsis Dell
        • Meditation Garden
        • Mediterranean Garden
        • Ornamental Grasses
        • Perennial Garden
      • Gardens R-Z >
        • Rhododendron Walk
        • Sino-Himayalan Region
        • South African Garden
        • Southern Hemisphere
        • Stone Garden
        • Vegetable Garden
        • Woodland Garden
    • Garden History >
      • History photos
  • Science
    • Animals & Insects >
      • Birds
      • Butterflies and Moths
      • Insect Friends
      • Small Creatures
    • Buds
    • Colour and Vision
    • Dynamic Symmetry - Fibonacci Spirals
    • Flowers
    • Fruit
    • Germination
    • Habitats and Environments
    • Hormones
    • Leaves
    • Life on Earth
    • Light, Energy, and Rainbows
    • Plant Calendars
    • Pollination
    • Pollen
    • Roots
    • Scents
    • Seeds
    • Soil
    • Stems
    • Vascular Plants
    • Web of Interdependence
    • Weeds
  • Bloedel
  • Search
    • Internet links
  • About
    • ERICA, ERICA'S TREE (and a short history of Guiding) - June 14, 2018
  • Contact