When first potted, give them very little water, and promote growth by means of a bottom heat of 65°.
bottom heat is always essential to the best success with cuttings.
Some kind of protection, commonly combined with bottom heat, is always given cuttings made from the soft and growing parts.
It is necessary to have bottom heat and a uniform temperature of about 70.
In northern regions it is especially needful that the soil furnish an abundance of bottom heat for the grape.
They delight in a tan-bed where the bottom heat ranges from 70 to 80.
The bottom heat, which he considers proper, is from 90° to 100°.
The bottom heat of loose, warm, dry gravelly or stony soils hastens maturity.
In whatever structure they may be growing, it is advisable to keep up the bottom heat by a gentle fire, or by linings.
When the buds show, the pots may be put in bottom heat in a temperature of sixty-five to seventy degrees.