Plant Propagation

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Plant Propagation
2011-12-01 03:00:42
Plant Propagation

Plant Propagation
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  1. Seed Saving
    • buyings eeds
    • gathering seeds (technique & timing important)
    • cleaning seeds
    • drying seeds
    • storing seeds
  2. Seed Sowing
    moisture, media, warmth
    • Containters
    • trays
    • flats
    • plugs

    • Planting depth : 0-2x thickness of seed
    • Maintain moisture/humidity near soils
    • provide patial shade until germination
  3. In Ground Sowing
    • fine friable soil, free of weeds, debris, and large particles
    • broadcast, row or border seeding
    • rake in seeds, protect from birds, rodents, cats
    • nursery beds prior to platin
    • keep moist, warm if posssible
    • thin seedlings upon germination
    • plant in permanent spots when more mature
  4. Types of Propogation
    • Divisions
    • Seeds
    • Stratification
    • Layering
    • Cuttings (stem, leaves, roots)
    • Micro-propagation (tissue culture)
  5. Cuttings: The Basics (3)
    • 1 - conserve stock plants reserves
    • don't take more than 10-20% of plant
    • 2 Good hygiene
    • use clean sterilized tools
    • sharp tools
    • sterile growing media
    • removal of any cutting or batch that shows signs of disease
    • take cuttings when plants are not in flower, after flowering is good
    • good
  6. Cuttings: Rooting Media
    • rooting media provides
    • support to the cutting
    • clean environment-sterile
    • water-retentive
    • well aerated

    • mixtures of peat, fine grit, perlit, vermiculite, pumice, sand
    • straight vermiculate or perlite works
  7. Cuttings: Protection
    Semi-ripe or soft tissues from tops of perennials need good supoly of water - sheltered humid environment

    • bottom heat will increase roots
    • hardening off, gently
    • don't overwater until they are established
  8. Stem Cuttings: General Methods
    • Types : stem, stem-tips, basil stem
    • Soft green or semi-ripe wood
    • first flush of growth good (leave second for flowering)
    • non-flowering shoots always preferable
    • periodic checks for pests, like aphids
    • lower cut made just below a node (leaf joint)
  9. Stem-Tip Cuttings
    • soft & greenwood cuttings from new growth (spring or early summer)
    • semi-ripe cuttings from shoots in active growth but where basal parts beginning o ripen (mid-summer to mid-autumn)
  10. Basal Stem Cuttings
    Entire young shoots with piece of parent tissue (older) at base – cut at the crown and include a bit of root crown

    Strong shoots in active growth, quick to rootIf taken early in season, can give nice sized, flowering plants same year - Salvias- Phlox

    Can force plants to produce basal cutting-shoots by giving light/warmth (greenhouse) early in season
  11. Cane Cuttings
    • thick stalked perennials have 'canes'
    • rhododendron
    • tropicals
  12. Leaf Cuttings
    • Sansevieria
    • Peperomia
    • African Violet
    • Begonias
    • Succulents
  13. Cacti & Succulent Propogation
    • Specialized leaves - spines or tiny leaves
    • thick, water retaining stems
    • Epiphytes
    • Swollen Roots, stems or leaves
  14. Species from many other families
    • Ice Plant
    • Agaves
    • Euphorbs
    • Portulacas
  15. Cacti Propogation
    • cuttings technique similar to other perennials
    • (cactus cuttings don't wilt, susceptible to rotting)
    • Suckers, offsets, tubers common
    • Grafting techniques well developed
    • Seeds are slower but inexpensive
  16. Seed Propogation
    Gathering Seeds
    • Let pods develop & ripen on plant
    • Some succulents have pods with tiny seeds
    • Other succulents & cactus have round seeds in fleshy pulp that must be cleaned off before drying
  17. Seed Propagation
    Seed Cleaning
    Keep seeds cool & dry
  18. Seed Propogation
    Sowing Seeds
    • most germinate quickly with warmth and moisture (sand)
    • some bes sown in later winter to max growh before dormant
    • most are slow growers once germinated, so plant in small containers at first
  19. Seed Propogation
    • Open, free-draining soil mix to avoid rot
    • coarse sand or sharp grit

    cover surface of soil mix & seeds with layer of grit
  20. Seed Propogation
    • Spray carefull or bottom water with drainage
    • put pot in water dish up to 1/2 depth of pot for 1 hr, remove
  21. Seed Propogation
    • Indirect Sun
    • Warm
    • Can seal in clear plastic bags
    • 70-86 degrees F

    Most Germinate in 2-3 weeks

    Hot Conditions (92 deg F) decrease germination
  22. Succulent Cuttings
    • Ripe or semi-ripe tissue best
    • Not really young, small or immature (prone to rot)
    • Use sharp, sterilized knifeSome leaf cuttings can just pull leaf off
    • Allow cut surface to form a callus
  23. Succulent Cuttings
    • Rooting media
    • Same as for seeds
    • Just enough moisture to encourage rooting without being wet (which would rot them fast!)
    • Use gritty cactus soil mix with fine grit on top
    • Insert cutting deep enough for support but not too deep or will rot
  24. Cactus Stem Cuttings
    • Late spring and growth has started
    • Proper hygiene, sharp tools, cut straight across stems or leaves
    • Tip of stem should be top of cutting
    • Similar soil to succulent cuttingsExtra gravel to support
    • Water sparingly