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Rosewell is a small former mining village on the North Esk above Roslin, set between the North Esk gorge woodland to the west and the agricultural farmland of the Midlothian plain to the east. The village is within walking distance of both the Roslin Glen Country Park gorge woodland and the improved pasture and arable fields toward Bonnyrigg. The North Esk below Rosewell carries the same ancient oak and hawthorn gorge character as at Roslin Glen downstream; the farmland to the north carries oilseed rape in April-May and white clover on the improved pastures. Sycamore on road margins and garden trees is the village's principal May flow source; bramble is dense on the former colliery margins.

Oilseed rape on the Midlothian arable plain between Dalkeith, Pathhead and the East Lothian boundary provides a powerful April-May flow that is one of the most reliable in the Lothians. White clover on the improved pastures of the Esk valley floor and the amenity grasslands of the Midlothian towns is the main mid-summer crop from June through July. Sycamore is the dominant May flow tree throughout the council area, with the best sources in the North Esk gorge woodlands at Roslin Glen and Lasswade. Hawthorn on the valley hedgerows and the Midlothian lane margins provides a complementary May blossom flow. Himalayan balsam is establishing in the lower Esk corridors near Dalkeith. Bramble is dense on former colliery and mining reclamation sites throughout the area. The Pentland Hills above Penicuik and the Moorfoot Hills above Gorebridge carry heather and bilberry from late July — modest but accessible upland heather ground within the council area. Ivy closes the foraging year on Dalkeith Palace estate walls and the older stone buildings of the Esk valley villages in October.