Planting the Bulbs

• Experts Anne M. Hanchek, Jane E. Bolla and Deborah Brown of the University of Minnesota Extension suggest that whatever bulbs you plant, do so in groups of three or more for the most eye-catching effect. Asiatic, Oriental and other special varieties can all be grouped together for interest and color contrast. Lily bulbs are medium-sized balls covered with heavy scales, and they lack the papery exterior that tulip bulbs have. Bulbs should have roots attached and be firm to the touch. Plant them as soon as possible to avoid drying out. Amend soil with organic fertilizer and build up an area from which water can drain away from the lilies, as they do not like soggy roots. Hanchek, Bolla and Brown suggest that small bulbs be planted 2 to 4 inches deep, while larger bulbs go 4 to 6 inches down (as measured from the bulb tip). Most lily varieties are hardy to Zone 3, including all but the coldest winter climate areas. Be sure to heavily mulch the ground over the bulbs when the first frost comes.
  
  

Tending to New Growth

• According to Maureen Gilmer, master gardener for HGTV.com, Asiatic lilies can produce as many as 50 blooms per season. As the blooms mature and fade, pinch them off with care. Remember that the leaves and stems should be left to die off naturally on a bulb-grown plant, because the energy from these parts goes right back into the bulb to be saved for next year's growth. Try to avoid watering at night as a foliar disease can emerge on leaves that remain wet overnight. You can also water at the base of the plant to prevent damage to foliage. After several years of blooming, you will want to dig up and divide the bulbs, spreading them out or moving them for fuller growth and more blooms. Spacing between plants is important for resistance to disease and the overall health of your lilies. A phosphorus-based, slow-release fertilizer applied in the spring will also encourage beautiful blooms.
  
  

Protecting Against Pests

• Other than foliar blight caused by nighttime watering, protect your lilies against aphids with a strong spray from the garden hose. Rabbits love to eat lilies, and other rodents will also attack the stalks and bulbs if given the chance. Look into applying a special rodent repellent, which is not a poison but works to make the plants distasteful to the attacker. Take special care to guard the lily stalks when they are just emerging from the ground in spring, as they are the most tempting to rodents at this stage.