Pennsylvania Flower Growers #224
Several cultivars of Easter lily are grown as cut flowers or pot plants. They differ slightly in their response to low temperature treatment. The lily bull) increases in size each year; two growing seasons are necessary to produce a commercial size bulb from stem bulblets. At the time of digging, the lily bulb is vegetative. Flowers are initiated when the stem is approximately three inches above the top of the bulb (approximately 1 inch above the soil surface when planted at the recommended depth). Freshly harvested bulbs are dormant and re main so when held at temperatures of 70 F or higher. The low temperature requirement for accelerated flowering may be provided partially by relatively low field temperatures (approximately 50°F). Four weeks at 70°F will remove the effects of low field temperatures (Miller and Kiplinger, 1966).
Keywords: bulbs Eight weeks at fluctuating 40 and Non-verna lized bulbs optimum temperature for vernalizat