Answer: Washington State University lists the following apples as the most disease resistant cultivars for the Puget Sound region:
Pristine?Ripe early to mid August. Clear yellow skin is very attractive. One of the
earliest disease resistant varieties, with a refreshing flavor and firm crisp flesh.
Moderately tart, holds well on the tree.
Williams? Pride?Ripe early to mid August. Attractive red stripe over yellow, good flavor but susceptible to mildew.
Chehalis?Ripe early to mid September. Yellow apple with good natural resistance
to scab but susceptible to mildew. Thin skin bruises easily. Good dual purpose for fresh eating and sauce but too soft for pies.
Prima?Ripe early to mid September. Attractive bright red over yellow, at its best
when fresh from the tree but texture softens rapidly in storage. Good mildew resistance.
Dayton?Ripe early to mid September. Trees are vigorous and crop well, but may need
a year or two in production to reach good quality. Fruit is unattractive dark orange red over yellow. Flesh is crisp, juicy, with sweettart flavor. Stores better than Prima.
Liberty?Ripe early to mid October. Attractive, uniform red fruit with good flavor,
very similar to Spartan in appearance and quality. Trees are very productive and need
effective thinning for good fruit size. Well adapted to western Washington conditions.
Enterprise?Ripe mid to late October. Mac type, flavor fair to good, firm, crisp.
Moderately productive. Stores well until December, then flavor starts to decline.
Belmac?Ripe late October. Late season Mac type, good flavor, firm and crisp. Productive, vigorous trees. Fruits store well until February.
Some heirloom varieties to consider include Yellow Transparent, Tydeman?s Early, Tompkins King, Roxbury Russet, Yellow Bellflower, Wolf River, Hudson?s Golden Gem, Rhode Island Greening, Golden Russet, Northern Spy, Baldwin, Newtown Pippin, and Esopus and Spitzenberg.
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