Spirit of 76

Spirit of ’76 Mango (Mangifera ‘Spirit of ’76’) — Detailed Profile

Origin & Breeder:
• Developed in Boynton Beach, Florida, USA by Laurence H. Zill, a well-known Florida horticulturist and mango breeder. The original tree first fruited during the U.S. Bicentennial in 1976, which inspired the cultivar’s name.

Parentage:
• A seedling of the Zill mango, open-cross pollinated with Haden, confirmed by pedigree analysis.

Tree Characteristics:
• Vigorous, moderate-to-medium growth with a spreading canopy under proper management.
• Not typically used for large commercial orchards, but popular as a dooryard/home orchard mango in Florida and similar subtropical climates.

Fruit Description:
• Size & Shape: Medium to large, oval-shaped fruit averaging around a pound (about 16–24 oz).
• Skin: Yellow with a vibrant red blush when mature.
• Flesh: Deep yellow, completely fiberless, smooth, juicy and tender, with a rich sweet tropical flavor and subtle citrus/peach notes.
• Seed Type: Monoembryonic (won’t grow true from seed).
• Season: Typically mid- to late-season (June–July) in Florida.
• Shelf Life: Fruit is delicious but short shelf life — can over-ripen quickly after picking.

Disease Resistance / Susceptibility:
• Anthracnose: Moderately susceptible; trees and flowers can be affected under humid conditions.
• Powdery Mildew: Like most mangoes, susceptible during wet/humid weather. Reports suggest it still sets fruit even with some infection.
• Bacterial Black Spot: Fruit displays good resistance, though foliage can show symptoms.
• Overall, disease resistance is moderate to above-average — better than some parents but not highly resistant compared to the most disease-tolerant cultivars.

Notes:
• Not widely adopted for commercial production because of soft flesh and short post-harvest life, but cherished by enthusiasts for fresh eating.
• Trees are included in USDA germplasm collections and at the Miami-Dade Fruit & Spice Park as part of Florida’s diverse mango heritage.