Move the new hybrid plant to a humid, dark environment immediately. The plant must have time to grow the two vascular systems together, which allows sap to flow through the plant. During this time, keep the plant in a humid, dark environment to minimize the amount of water loss from the scion plant until this happens.
The healing chamber described earlier is perfect for this, with an opaque shade protecting it from sun. For a smaller operation, put a plastic bag over the plant and keep out of direct sunlight. Water the base of the plant or mist its leaves if the environment is below 85% humidity.[17]