1. Techniques of Grafting
Chapter 12

2. Rules Rootstock and scion compatible Cambium to cambium contact
Proper physiological stage
Protection from desiccation
Proper aftercare

3. Graft Types Detached-scion grafts Approach grafts
Scion is added to rootstock as a separate piece of wood
Whip, cleft, bark , etc.
Approach grafts
Where rootstock and scion are joined together, and graft to ‘take’ before the scion is removed from its roots
Repair grafts of established trees
Bridge graft
See summary of graft types on page 464

4. Whip Grafting 1/4-1/2” stock Considerable cambial contact Strong union
Tying/protection
Bury
Wax
Budding rubbers
Adhesive tape
Plastic tape

5. Splice or Whip Graft
No tongue
Pithy stems (rose)
Brittle wood

6. Splice or whip graft. Very common technique

7. Whip-and-tongue graft
Whip-and-tongue graft. Much stronger than whip graft, and much better cambium contact.

8. Saddle Graft

9. Side Grafts Side Stub graft Side-veneer graft 1” stock Nursery trees
Must be waxed
Side-veneer graft
seedling evergreens
mist or grafting case

12. Cleft Graft
Topworking
Early spring
1-4” stock, 3/8-1/2” scion

13. Cleft Graft. Widely used in topworking fruit trees

14. Bark graft 1”+ stock Bark must slip
Scion gathered when dormant and stored
Must be staked

16. Approach grafting Grafting two self-sustaining plants together
Used for difficult grafts
At least one of the plants should be containerized
Do when growth is active
Must be secure and waxed

18. Inarching Stock & scion on own roots Repair graft
Change rootstock
Replace damaged roots
Use seedlings or suckers for new rootstock

20. Bridge graft
Repair damage to trunk
Must be waxed

22. Root Graft Graft scion to root Done on bench
Grafted and stored (45F, 2 months)
Plant in spring

23. Double-working Used to incorporate an interstock Bud or graft
Several techniques
liner, spring bud, fall bud
bench root graft, fall bud
double bench graft
bench graft scions, field graft to stock
double shield bud (figure 13-19)
fall T-bud to interstock, whip graft to stock in spring

24. Scion Wood One year old or less Healthy well developed buds
Vigorous, hardened wood from upper part of tree
Avoid suckers (you never know where they’ve been)
Center or bottom 2/3 of shoots

25. Collection & Handling Collect as dormant material 32-40 F
Keep moist and aerated
If buds are growing, graft will fail

26. Bench Grafting Grafts performed indoors and not initially planted
Root grafts
Potted liner rootstocks
Performed manually with tools or semi-automatically by machines or robots

27. Grafting Robots http://www.youtube.com/watch?v=0vXXcPlBlfw