Fruit of medium size, roundish-oval; suture obscure; skin dark blue with light bloom; flesh yellowish-green, juicy, sweet and refreshing; clingstone; early.
Blue Primordian. Domestica. 1. Parkinson Par. Ter. 575. 1629. 2. Rea Flora 206. 1676.
An old variety of the same shape as the Red Primordian but smaller and of a violet-blue color; of good taste; ripens early, productive.
Blue Prolific. Domestica. 1. Flor. and Pom. 89. 1876. 2. Hogg Fruit Man. 722. 1884. 3. Guide Prat. 156, 356. 1895.
Blue Prolific 3. Fertile Bleue 3. Rivers’ Blue Prolific 2. Rivers No. 4 1.
Tree hardy, productive; fruit below medium in size, oval, slightly narrowed at the stem end; cavity and suture shallow; dark purple, with thin bloom; flesh dull greenish-yellow, juicy; flavor brisk and agreeable; a cooking plum; stone clinging; ripens early.
Blue Prune. Domestica. 1. Hoffy Orch. Comp. 2. 1842.
Hoffy published a colored engraving of this variety, but did not describe it. Fruit long-oval; suture deep; dark blue.
Blue Rock. Domestica. 1. Can. Exp. Farms Rpt. 423. 1903.
A seedling from Thomas Rivers, England. Tree upright, productive; fruit of medium size, round; cavity small; suture distinct; dark purple; dots small, gray; flesh yellow, juicy, sweet, rich; clingstone; early.