How to Grow AC Excel
AC Excel
Solanum tuberosum 'AC Excel'
vegetableAC Excel is a Canadian-bred potato cultivar known for its excellent disease resistance and reliable yields. This mid-season potato produces smooth, white-skinned tubers with white flesh and is valued for its versatility in the kitchen and strong agronomic performance in northern climates.
When should you plant AC Excel in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example AC Excel timeline · Pittsburgh, PA (Zone 6b)
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Plant AC Excel
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest AC Excel
Around Jul 6≈ 80 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact AC Excel dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, particularly well-suited to cooler climates and Canadian growing regions
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Get my AC Excel timeline →Growth Stages
Seed Piece Sprouting
1-2 weeks pre-plantingSeed pieces develop sprouts in cool, dark storage before planting. White or purple shoots emerge from eyes.
Use certified seed potatoes; store at 40-50°F before planting. Plant as soon as sprouts emerge for vigorous growth.
Emergence & Establishment
2-3 weeks after plantingShoots break through soil surface and develop first true leaves. Plants are 2-4 inches tall with green foliage.
Protect young shoots from late frost if necessary. Begin regular watering. Apply mulch to conserve moisture and suppress weeds.
Vegetative Growth
4-6 weeksPlants develop robust canopy with multiple stems and leaflets. Stolons form underground, initiating tuber set.
Hill soil around plants twice during this stage to encourage tuber development and prevent greening. Monitor for pests and diseases, especially late blight.
Flowering & Tuber Bulking
3-4 weeksPlants produce small white or light pink flowers. Underground, tubers rapidly enlarge as plants continue vegetative growth.
Maintain consistent watering; drought stress during this critical period reduces yields. Continue pest and disease monitoring.
Maturation & Harvest Readiness
2-3 weeks before harvestFoliage yellows and begins to senesce. Tuber skins set and harden, indicating readiness for harvest.
Reduce watering gradually once foliage dies back. Allow skins to cure for 2 weeks before digging for better storage. Harvest when soil is dry to reduce disease.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick adults and egg clusters. Use neem oil or spinosad sprays. Rotate crops annually. Deploy row covers on young plants.
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Spray insecticidal soap or neem oil. Encourage beneficial insects. Use reflective mulches to deter. Monitor regularly.
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Use row covers until plants are established. Dust with food-grade diatomaceous earth. Avoid excessive nitrogen fertilizer.
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Rotate crops; avoid planting where grass was present. Trap wireworms using baited seed potatoes. Ensure good drainage.
Uses
All-Purpose Cooking
CulinaryAC Excel's white flesh and waxy texture make it ideal for boiling, mashing, salads, and soups. The smooth skin and clean appearance also make it suitable for baked and fried preparations. [source]
French Fries & Chips
CulinaryWith good solids content and uniform size, AC Excel produces quality fries and crisps valued by food service and processing applications. [source]
Long-Term Storage
HouseholdAC Excel stores exceptionally well for 4-6 months in cool conditions, making it excellent for cellaring and winter supply. [source]
Nutritional Value
MedicinalLike all potatoes, AC Excel provides excellent sources of potassium, vitamin C, and B vitamins, supporting cardiovascular and immune health. [source]
Livestock Feed
WildlifeCooked AC Excel tubers are nutritious supplemental feed for poultry, swine, and other farm animals. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
AC Excel is harvest-ready 80-100 days after planting when foliage yellows and dies back. Dig carefully with a fork to avoid bruising tubers. Harvest in dry conditions for best storage. Allow tubers to cure in a cool, dark, humid space (50°F, 85-90% humidity) for 10-14 days before long-term storage. Store at 40-45°F with good ventilation.
Fun Facts
- 🌱 AC Excel was developed by Agriculture and Agri-Food Canada (AAFC) at the Potato Research Centre in Prince Edward Island, making it a Canadian success story specifically bred for northern growing conditions.
- 🌱 This variety is renowned for its exceptional resistance to late blight (Phytophthora infestans), a devastating potato disease, reducing the need for fungicide applications.
- 🌱 AC Excel tubers can maintain high quality and low respiration rates during long-term cool storage, making them ideal for regions with long winters and limited fresh vegetable availability.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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