The Reliance peach tree is considered one of the most cold-hardy, reliable peach varieties, specially bred in 1964 for northern climates (USDA Zones 4-8) and capable of surviving temperatures as low as 
-25∘F. It produces medium-sized, yellow-fleshed freestone fruits with a red blush, ripening in mid-August. 
Key Characteristics and Care:
Hardiness & Growth: Extremely cold-hardy, vigorous, and fast-growing, reaching 10-15 feet in height and spread.
Fruit Quality: Soft, sweet, and juicy, making them excellent for fresh eating, canning, and freezing.
Maintenance: High; requires consistent pruning in late winter and heavy thinning in June to ensure decent fruit size.
Pollination: Self-fertile.
Sun & Soil: Requires full sun and well-drained soil.
Susceptibility: Prone to pests like aphids and mealy bugs, as well as potential issues with, canker, and wildlife. 
The Reliance peach is an excellent choice for northern home gardeners looking for a dependable, high-yielding, and resilient fruit tree, though it requires active management for best results.