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Plant Propagation

Plant Propagation. Containers. Plastic is best! Easy to clean and re-use Durable Can use clay heavy, breakable, & salts build up Can use untreated wood like cedar Treated wood contains arsenic and/or copper which is toxic to plants. Containers. Can use paper Biodegradable Flimsey

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Plant Propagation

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  1. Plant Propagation

  2. Containers • Plastic is best! • Easy to clean and re-use • Durable • Can use clay • heavy, breakable, & salts build up • Can use untreatedwood like cedar • Treated wood contains arsenic and/or copper which is toxic to plants

  3. Containers • Can use paper • Biodegradable • Flimsey • Can use wood fiber/peat • Biodegradable • Can use coir • Biodegradable, coconut fiber, renewable resource • Can use peat pellets • Both “pot” and media in one! • Biodegradable if you use the kind without plastic mesh

  4. Plastic!

  5. Clay

  6. Salts!

  7. Compressed wood fiber/peat

  8. Coir

  9. Coconut fiber “coir”

  10. Jiffy Peat pots without plastic mesh

  11. Paper pots

  12. Media • For seed: • Use a “clean” germination mix • Use a mix designed for seeds • Smaller particles for good seed contact • Need space for air and water • No fertilizer is necessary to start but timed-release fertilizer helps after germination • Wood/fiber/paper pots will need extra nitrogen • Microbes need a combination of both carbon and nitrogen

  13. Different commercially-available seed germination mixes Zinnias Obviously, not all germination media are the same! Ones on the left had no time-release “starter” fertilizer and those on the right did!

  14. Media • Components • Organic: peat, bark, sphagnum moss, coir, compost, composted rice hulls • Inorganic: mineral components for drainage and aeration • Sand (only horticultural sand, play sand has ocean salt!) • Perlite (for aeration, white in color like “pearly white teeth”, made from volcanic rock) • Vermiculite (for aeration & moisture-holding & nutrient exchange, tan in color-made from mica rock)

  15. Peat bog in Canada Harvester

  16. Peat harvesters at work Peat is a slowly-renewable resource

  17. Soilless potting mix is a combo of peat perlite vermiculite

  18. Seed Collection • Most seeds should be collected on a sunny, dry day, in mid-day (after the dew has dried up) • Seeds can be collected in paper envelopes or brown paper bags • Capsules that split open should have a bag placed over them several days before they split so that seeds are not lost

  19. Seed Collection • If seed is enclosed in a fruit, you must remove the fruit first • Fruit can be soaked to soften and then removed by hand • Seed will NOT germinate if planted in a fleshy fruit!

  20. Seed Extraction

  21. Storage • Most seeds can be stored as follows: • Cool (refrig. For short term, Freezer for long term, exceptions would be water-filled seeds of tropical plants) • Dry (air dry but not in direct sun!) • Dark • Consistent • Sealed wax paper or foil pouch best • Freezer storage bags wrapped in aluminum • Remember to LABEL!!

  22. Seeds • Seeds can have different type of needs to properly germinate • 1.) Ready to germinate… just give proper conditions • 2.) Needs to have the seed coat abraded (scarification) • 3.) Needs to have a period of cool-moist (stratification) • Needs both 2 & 3

  23. Scarification • This can be done by: • Using a file • Using sandpaper

  24. Scarification • This can be done by: • Using a rock tumbler filled with grit or lined with sandpaper

  25. Stratification • This can be done by: • In a zip-lock type baggie • Placing seeds in vermiculite or sand • Add water and drain off excess • Place in a refrigerator • Generally 1 - 3 months • Depends on where the plant is native to

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