September is time to order spring flowering bulbs
According to Master Gardeners, September is the time to order spring flowering bulbs to plant.
Water them thoroughly after planting. Unless there’s ample rainfall, continue watering every couple weeks so they develop good roots before winter.
Mulch them once the soil freezes. The longer you wait to plant bulbs, the less likely they’ll come through winter successfully. Help your plants prepare for the long winter by adequately watering plants, especially trees and shrubs planted in the last 5 years. Provide these plants 1-1.5 inches of water per week.
One of the very best times of the year to be fertilizing your lawn is from about Labor Day through the middle of September. Applications should be one pound of nitrogen per 1000 square feet.