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Other Dutch Bulbs
Lilies... Their colorful flowers are prized for their elegant displays in early to midsummer, when there is a lull in the garden. Easy to grow in full sun or light shade, and they are perfect for naturalizing. Good drainage is important for Lilies..., so plant them in a well-drained soil, 6-9" deep and 6-9" apart. Asiatic Lilies bloom several weeks before the highly fragrant Oriental varieties.
Poppy Anemones... Because Poppy Anemones are not winter-hardy below 0 degrees F (-18 degrees C), they should be stored in their bags in an area where the temperature will be about 40-50 degrees F (5-10 degrees C), and then planted in the spring after the last frost. In subsequent years, dig them up in late fall to early winter after several hard frosts and store again during the winter. Soaking the tubers for several hours prior to planting often helps them break into growth more rapidly.
Mountain Bells... Mountain Bells (Allium moly, A. neapolitanum, A. ostrowskianum) are ideal to bridge the season between spring and summer flowers. They bloom in late spring and early summer and have multi-flowered clusters on 10-14" stems. Leave undisturbed for best results. Because of their scent, rodents and deer won't touch them.
Giant Alliums... Giant Alliums such as Persian Blue (Allium aflatunense) and Drumsticks (Allium sphaerocephalum) thrive anywhere and multiply without any special attention. Leave undisturbed and lift them only when they become too crowded to bloom freely. Pleasing fragrance and striking in the landscape. Not eaten by rodents or deer.
Pink Buttercups... Pink Buttercups (Oxalis adenophylla), which are sometimes called Wood Sorrel, are hardy and beautiful. These low-growing bulbs have an extended blooming season lasting from May through July. The gray-green foliage makes a wonderful groundcover and foil for other flowers. They make excellent complements to the lavender and purple-flowered Alliums and early summer perennials.
Tall Dutch Iris... Tall Dutch Iris (Iris hollandica) bloom in late spring, but the foliage usually appears several weeks earlier. They are best planted in groups. The bulbs can be left undisturbed until they become overcrowded, at which time they should be lifted after foliage has died down. Clean and store bulbs in a dry, cool, dark place and replant in the fall.
Crown Imperials... Breck's Giant Crown Imperial bulbs (Fritillaria imperialis) should be treated with special care. Soil should be loosened to a depth of at least 12" and sand, small pebbles or other drainage material worked into the bottom 2-3" of your bed or planting hole. Cover this with another 2-3" of loose soil and then set the bulb on top of this. Crown Imperials grow best in family groups and should be left undisturbed from year to year. Their scent will help to keep moles and rodents out of the soil around them.
Grecian Windflowers... Grecian Windflowers (Anemone blanda) have daisy-shaped early spring blooms and vivid green fernlike foliage. For best results, plant them in naturalized areas, rock gardens, mixed borders or in clusters, preferable in sunny spots. Leave them undisturbed for perennial blooming. It is also a good idea to plant Grecian Windflowers amongst low ground covers which will protect them when they go dormant.