Planting spring bulbs now will add color to gardens from February through June. Plant bulbs at a depth about four times the height of the bulb. Charts of bulb planting depth are usually included in mail orders and in garden centers. To prepare the soil for bulb planting, dig out the soil the depth the bulbs are to be planted, then dig in compost and high phosphorus fertilizer another three or four inches deeper. Place the bulbs in the hole or trench with the pointed side up, spacing as indicated by the chart or a little closer. Groups of 12 to 15 bulbs or more give a nice cluster effect. Cover the bulbs with the soil that has been removed, water thoroughly, and then cover with three inches of mulch. CSU Fact sheet 7.410
Ground covers are alternative to lawns and a kind of living mulch. They are especially effective in hard-to-grow or hard-to-water areas: in shade, under large trees, on steep slopes, and on narrow strips. Ground covers may be planted over spring bulbs to camouflage the fading foliage after the bulbs have bloomed. Vines, low-growing shrubs, and other perennial plants may be used as ground covers. Choose plants that spread, maintain a low growth, and are dense enough to keep out weeds. With good soil preparation and adequate water the first year, ground covers usually require less water and less maintenance than lawns. To plant ground covers, remove all sod and weeds. Dig six to eight inches down, working in several inches of compost or manure. Water the plants well after planting and mulch between plants until they have spread. Be sure the plants are right for the location. For lists and descriptions of groundcover plants, you may wish to request CSU Fact sheet 7.400.
