'Ruby Glow' is a fairly strong-growing bushy, upright shrub up to 4m high and 3m wide with rounded leaves which open medium green, become dark green, and turn yellow and orange tinted with red in autumn, and very slightly scented flowers with purplish red calyces and slightly curled and crimped coppery red petals mid to late winter. Grow in moderately fertile, neutral or preferably slightly acidic soil which is well-drained but humus-rich and moisture-retentive in summer, in full sun or partial shade.