MONTROSE apricot Semi-dwarf (Mustang)

Main characteristics

• Hardiness/cold resistance
• Very good. Able to withstand harsh winters. Tolerates USDA/Canada zones 5 and colder.
• Flowering
• Late flowering, allowing it to escape spring frosts in many regions.
• Pollination
• Self-pollinating (self-fertile): it can produce fruit without other varieties nearby, but cross-pollination often improves yield.
• Fruit
• Large to medium, yellow flesh with a nice red blush on the skin. Sweet taste. The pit (the hard part) is edible, resembling a sweet almond.
• Freestone/semi-freestone
• Freestone or semi-freestone depending on the source (i.e., the fruit separates relatively easily from the pit).
• Climate requirements
• Requires a fairly high number of winter chill hours: some sources cite 700-1000 hours below 45°F (7-8°C) to induce proper dormancy.
• Harvest period
• Mid-July in several regions (towards the end of summer).

Advantages

• Very hardy, good choice for cold regions where other apricot trees freeze or flower too early.

• Fruit with good taste.

• Resistant to spring frosts thanks to its late flowering.

• Self-fertile, so a second tree is not absolutely necessary, but it is still useful.

Limitations & considerations

• Chill hour requirements — if it doesn't get enough “chill hours,” flowering or fruiting may be reduced.

• Fungal diseases — in more humid or cool climates, there is a greater risk of fungus, especially if air circulation is poor or water stagnates.

• Very hot or very humid climates could pose challenges.

• Late maturity — if you are in a region with short summers or early autumns, you will need to check that the season is long enough for the fruit to ripen properly.

Growing tips

• Plant in full sun, well-drained soil, avoiding waterlogged soil.

• Mulch, compost, and maintain the soil well.

• Prune to encourage an open shape, allowing light and air to enter.

• Water during dry periods, but avoid excess stagnant moisture.

• Protect young trees (e.g., from late frost) if springs can be unpredictable in your area.