Features of growth and development seasonal rhythms of Hemerocallis × hybrida hort. in the conditions of introduction in the Nikitsky Botanical Gardens

Abstract

The rhythms of growth and development of Hemerocallis × hybrida hort. varieties in the conditions of the Southern Coast of the Crimea, the dependence of the onset of the phenological phases of the varieties Hemerocallis × hybrida hort. from accumulation of the sum of active air temperatures above 5°C have been studied, the sums of active air temperatures above 5°C have been determined for the entry of varieties Hemerocallis × hybrida hort. of different periods of flowering into the «flowering» phase.