Tree Hollyhock. An erect shrub with toothed dark green leaves and single white or pink flushed white flowers with a crimson eye from mid-summer to autumn. Height 1.8m. Spread 1.5m. Flower colour White, Crimson. Flowers from July to October. Deciduous. Foliage colour Green. Hardy. Planting instructions Back-fill with soil mixed with peat and a suitable fertiliser.