Cherry (Lat. Prunus Serotina) Family: Rose (Lat. Rosaceae) Size: 15-30 m. The trunk can grow to around 1.2 m in circumference. Hardness: Essentially as hard as oak. Hardwearing. Brinell value: 3.6 Colour change: Undergoes a strong colour change and darkens dramatically to form a dark reddish-brown colour when it ages.