Q.Specimen plant for center of small garden circle
We have a small circular garden area…approx. 5-6′ across. We are looking for something to put in the center of it with smaller plants around it and the edges. Prefer pink, purple, whites. We are in Zone 4. Any suggestions?
You should make some determinations on the growing conditions; sunlight and soil.
These articles will help you get started.
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/shrubs-for-zone-4-gardens.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/zone-4-dogwood-trees.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/zone-4-japanese-maples.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/growing-trees-in-zone-4.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/viburnum-shrubs-for-zone-4.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/choosing-hydrangeas-for-zone-4.htm
I also suggest visiting your local garden centers and greenhouses to look for plants, trees and shrubs for your growing zone.