The largest blossoms of the ornamental onions, Allium giganteum adds color and structure in perennial flower bed. We recommend planting this variety with the Fordhook Sun perennial collection. Alliums are deer resistant flowers that flower late in the spring to early summer. They provide color in the garden between the finale of the spring bulbs and the summer show of the perennial flowers. Bulb size is 20 cm. and larger.
One cardinal rule for planting flower bulbs, is to plant them in soil that is well-drained. Check the proposed planting site for standing water after a rainfall. If you must plant where the soil is known to remain wet, raise the soil level by 6-12" above the surrounding soil.
When to Plant Flower Bulbs
Fall is the time when nearly all spring blooming bulbs are dormant and the pleasant weather allows for shipping and planting. Plant flower bulbs in September or October to allow the most root growth.
Watering Flower Bulbs
After planting flower bulbs, water thoroughly to settle the soil around them and to encourage the Start of root growth. If ample rain is lacking, it may be necessary to water new plantings once a week in the fall. Flower bulbs also require water after blooming, during the stage when foliage is ripening; water weekly if rain is sparse.