Horticulture Unit 10 Grafting

Whip or tongue grafting is the best method to use when the rootstock and the scion are

• the same size in diameter
• the same age

The goal in grafting is to unite two plants

• so they grow as one
• in a physical union so that they grow together
• all of these choices

In grafting, great care must be used to match which layer of the scion and rootstock?

• woody
• cambium

The ideal time of the year to cleft graft is

• late summer, when buds are mature
• early spring, just before the buds begin to swell 

Whip or tongue grafting is accomplished in

• winter, when plants are dormant
• early spring

The side veneer graft is the most effective way to propagate the

• apple
• blue Colorado spruce

The top part of a grafted Colorado Spruce should be protected very carefully from drying out because

• spruce trees are naturally sensitive to drying
• the graft has no roots to replenish moisture

In cleft grafting, one side of the scion is cut thicker than the other

• so that there is more pressure on that side, resulting in close contact with the cambium. 
• so that the scion is handled more easily.

All cut areas that are left exposed in the grafting process should be covered with waterproof material

• to prevent insects from entering the graft
• to make the graft look better

A new technique modifying the usual whip or cleft graft method used to root roses more quickly is called:

• stenting
• stem inserting