When Do You Plant Flower Bulbs. September to october zones 4 and 5 october to early november zones 6 and 7. If you plant one flower bulb alone or make a long thin line along the walk the impact is less desirable.
If you re planting flowers to bloom in the spring plant the bulbs in the fall or plant summer blooming bulbs in the spring. You want your potted bulbs to begin to bloom around the same time as bulbs planted outdoors usually in early spring. Cover the bulbs with soil and mulch and water the area.
Others do best when you plant them in the fall.
Others do best when you plant them in the fall. Planting your bulbs 6 weeks before their blooming time gives them enough time to grow. Plant your bulbs about 6 weeks before spring. Don t wait for the official start of fall on the calendar to plant your bulbs.