Wildflower Wednesday: Marsh St. Johnswort
Mid-fall brings an end to most blooming flowers, with the exception of the hardiest asters and goldenrods. But it doesn’t bring an end to identification and study of these plants. Many herbaceous wildflowers retain identifiable aerial parts, such as distinctive seed heads, that allow reliable plant ID well past the last flowers. Marsh St. Johnswort (Hypericum virginicum) is no exception. Growing to approximately 2 feet tall, marsh St. Johnswort typically blooms in July and August. But due to persistent seed…