Plant These Giant Purple Flowers This October for a Garden Full of Color Next Year
Purple flower globes rise above coneflowers and grasses on tall stems, some reaching several feet from the ground. By the time they appear, the most important part of the job happened months before. These are ornamental alliums, and if you want them in your garden next year, fall is the time to put their bulbs in the ground. Why October is a good time to plant alliums Ornamental alliums grow from bulbs that benefit from a cold period before spring growth. In regions with cold winters, October often falls within the planting window: temperatures have dropped, but the ground has not frozen. Don’t rely on the calendar alone. Wait for cooler fall conditions and plant before the soil becomes too hard to dig. In warm climates, planting may need to wait until later in fall. Set each bulb with the pointed end facing up. Planting depth depends on bulb size, but a common guide is around three times the bulb’s height. Large allium bulbs need more depth than small varieties. The ...