Plum 'Opal'This Opal plum tree is undemanding and easy to grow yet produces an impressive yield of fruit reliably every year. The plums are ready to harvest from mid summer, making this cultivar one of the earliest to ripen. The fruits themselves have yellow flesh and purple skins flushed with red. They are ideal for cooking up delicious desserts and preserves or can be enjoyed straight from the tree. White five petalled flowers blossom on the tree from April to