I may mention I've got daffodils in flower - the first daffodils seen in Mesopotamia.
Ball found the temperature one inch below the surface to be 83, and he collected over forty species in flower.
The best effects are produced in formal beds by planting the same variety in each, to secure the plants being of the same height and in flower simultaneously.
Increased direct effect of solar radiation compensates for the cold of the nights, and in the few spots where plants have been found in flower up to a height of 12,000 ft., nothing has indicated that the processes of vegetation were arrested by the severe cold which they must sometimes endure.
Forcing is the accelerating, by special treatment, of the growth of certain plants, which are required to be had in leaf, in flower or in fruit before their natural season, - as, for instance, the leaves of mint at Eastertide or the leafstalks of sea-kale and rhubarb at Christmas, the flowers of summer in the depth of winter, or some of the choicest fruits perfected so much before their normal period as to complete, with the retarded crops of winter, the circle of the seasons.
