'FAQ:2004:6 - Lily Bulb' ()

If you cut any lily, do not take more than 1/2 to 2/3 of the stem (leaves) or they will not be able to rebuild themselves to bloom the following summer. Lily bulbs only put up one stem a year, so you need to take care of it. A better choice for cutting would be bulbs that have stems at least 4 feet in height, so there is room to cut off the top and leave enough leaves to nourish the bulb.