Clematis 'Broughton Bride' is an atragene-group hybrid — the same section as C. alpina and C. macropetala — raised by Vince Denny and named for Broughton, Lancashire. It carries nodding, semi-double flowers of creamy white with a green-cream centre in mid to late spring, often with a lighter second flush later in the season. At 6–8 ft it stays far smaller than the montana types, which suits an obelisk, a porch post, or a shaded fence panel rather than a whole pergola.
Atragene clematis bloom on the previous season's wood (pruning Group 1), so any size control should happen immediately after flowering — cutting in late summer or winter removes next year's buds. Plant with the crown 2–3 in below soil level to protect the base from wilt. Keep roots cool and shaded under a mulch layer while letting the top grow into sun. A soil pH between 6.5 and 7.5 suits this group. Hardiness is one of the group's strengths: it comes through zone 4 winters without dieback in most years.
Not sure when to prune this one? Read the Clematis Growing Guide — the three pruning groups and when to cut each.Clematis Wilt
Sudden wilting and blackening of stems and leaves, often just before flowering. Whole shoots collapse rapidly while roots remain healthy. Caused by the fungus Calophoma clematidina.
Cut affected stems back to ground level and dispose of them, not in compost. Water at the base to keep foliage dry, improve air circulation, and plant the crown deep so the plant can regenerate from below soil. Apply a fungicide if the problem recurs.
Powdery mildew
White or grey powdery coating on leaves — usually starting on older growth in humid conditions or when nights cool.
Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.
Root rot
Plants wilt, yellow, and stunt even in moist soil; lower stems and roots turn brown, soft, and mushy and the plant may collapse. Most common in heavy, wet, or poorly drained ground.
Improve drainage and stop overwatering, and never plant too deep. Lift and destroy badly affected plants along with the soil around the roots. Grow in raised or free-draining beds to prevent it returning.