Asexual propagation Vegetative prop Asexual propagation Cuttage Layerage

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Asexual propagation Vegetative prop.

Asexual propagation Vegetative prop.

Asexual propagation • Cuttage • Layerage • Division • Graftage

Asexual propagation • Cuttage • Layerage • Division • Graftage

Cuttage • Things to consider: – Rooting medium • vermiculite and perlite or sand

Cuttage • Things to consider: – Rooting medium • vermiculite and perlite or sand or water – Sterile/clean containers – Rooting powders or liquids

Cuttage • Types of cuttings – Herbaceous – Softwood – Hardwood • Length 3

Cuttage • Types of cuttings – Herbaceous – Softwood – Hardwood • Length 3 - 5” for herbaceous, 6 -8” for softwood/hardwood. Generally, the longer a cutting, the better • Need a MINIMUM of 2 nodes

Sticking easy-to-root cuttings directly in the ground

Sticking easy-to-root cuttings directly in the ground

Cuttage • Factors affecting rooting – Age of stock plant – Nutrients in stock

Cuttage • Factors affecting rooting – Age of stock plant – Nutrients in stock plant – Flowers buds present/absent – Temperature (top of cutting vs. bottom) – Wounding – Application of auxins – Moisture/aeration of medium

Cuttage • Factors – Time of year • Woody plants – Deciduous best in

Cuttage • Factors – Time of year • Woody plants – Deciduous best in fall/winter when dormant – Narrow-leaved evergreens - best in fall/winter – Broadleaved evergreens - best in summer • Herbaceous – take during spring with new growth

Cuttage • Types of cuttings – Tip cutting – Leaf-bud cutting – Leaf cutting

Cuttage • Types of cuttings – Tip cutting – Leaf-bud cutting – Leaf cutting

Layerage • Process of forming roots on a stem that is still attached to

Layerage • Process of forming roots on a stem that is still attached to a plant • Benefits: Renew an existing plant. Direct energy from “mother” plant • Problems: results in limited numbers of plants. Disease transmitted to new plant

Layerage • Types: – Tip-layering. Often done with raspberries and other brambles). Tip of

Layerage • Types: – Tip-layering. Often done with raspberries and other brambles). Tip of shoot inserted into ground upside down – Simple layering. Done in spring. 6” of tip is exposed. Wired and staked. Used on narrow -leaved evergreens

Layerage • Types: – Mound layering (stooling). Used on lowbranching shrubs – Air layering.

Layerage • Types: – Mound layering (stooling). Used on lowbranching shrubs – Air layering. To rejuvenate a “leggy” woody shrub or houseplant. • • • Girdle stem (cut phloem and cambium) Wrap in moist sphagnum moss Wrap in plastic and aluminum foil

Air layering • • • Girdle stem (cut phloem and cambium) Treat wound with

Air layering • • • Girdle stem (cut phloem and cambium) Treat wound with rooting powder Wrap in moist sphagnum moss Wrap in plastic Wrap in aluminum foil