Mature Height of a Pedro Walnut Tree

Size

• Pedro walnut trees are relatively small in size, with their mature height being about 30 feet. This compact growth size makes the variety well-suited for use in smaller landscapes. The vigorous growing and self-fruitful tree does not require another tree for pollination and fruit set. Though small in size, Pedro requires heavy pruning in order to maintain their vigor.

Background

• The Pedro walnut tree is the result of a cross between Conway Mayette and Payne. The tree starts to produce foliage about two weeks after Payne walnut trees, one of the four main English walnut varieties. Pedro was primarily conceived as a pollinator for early blooming walnut tree varieties. Persian or the English walnut varieties like Pedro are limited to areas that have a Mediterranean climate given their relative lack of cold hardiness as compared to the more cold hardy Carpathian walnut varieties.

Productivity

• Pedro walnut trees are an early-to-mid season variety. According to Jennifer Wilkinson's "Nut Grower's Guide," 63 percent of the lateral shoots bear fruit. The lateral fruit buds are borne on branch sides than the terminal bud. The greater the percentage of fruit bearing lateral shoots, the greater the production of fruit. These varieties also adapt better to planting at higher density.

Fruit Size

• Pedro walnuts are well sealed and medium-sized. The kernel weighs about 5.6 grams. When grown in regions with very hot weather, the quality of the shell and kernel is much inferior to a number of other varieties. Persian walnut varieties like Pedro grow best in well-drained, silty loam with a pH of 6.0 to 8.0. Fruit production is optimal in regions with hot and dry summers and mild winters.