The Chicago Botanic Garden Plant Evaluation Notes (PE Notes) are reviews of recommended plants for gardens in the Upper Midwest, as determined through scientific evaluation over a period of time -- four years for perennials, six years for shrubs and vines, and seven to ten years for trees. The program studies and recommends plants that are readily available in area nurseries.
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The Chicago Botanic Garden Plant Evaluation Notes (PE Notes) are reviews of recommended plants for gardens in the Upper Midwest, as determined through scientific evaluation over a period of time -- four years for perennials, six years for shrubs and vines, and seven to ten years for trees. The program studies and recommends plants that are readily available in area nurseries.
Heavy-flowering Oenothera are healthy plants with winter hardiness, giving many of these
taxa five-star excellent ratings. Sundrops and evening primroses thrive in full sun but tolerate light shade. Oenothera speciosa may spread rapidly to become weedy in rich or highly fertile soils.
Plant Evaluation Notes
The Chicago Botanic Garden Plant Evaluation Notes (PE Notes) are reviews of recommended plants for gardens in the Upper Midwest, as determined through scientific evaluation over a period of time -- four years for perennials, six years for shrubs and vines, and seven to ten years for trees. The program studies and recommends plants that are readily available in area nurseries.
