Planting Irish Potatoes: When, How, and What to Expect

Irish potatoes are one of the easiest and most rewarding vegetables to grow, especially when planted early in the season. Getting them in the ground at the right time—and planting them correctly—sets the stage for a strong harvest just a few months later.

When to Plant Irish Potatoes

Irish potatoes should be planted while temperatures are still cool but the ground is workable. Planting early allows tubers to develop before warmer weather arrives, which helps prevent stress and improves overall yield.

Once seed potatoes are available, it’s usually time to start planting.

Preparing Seed Potatoes

Before planting, larger seed potatoes should be cut into pieces, making sure each piece has at least one healthy “eye.” After cutting, allow the pieces to dry for a day or two. This curing process helps reduce the risk of rot once they are planted in the soil.

Smaller seed potatoes can be planted whole without cutting.

How to Plant Potatoes

Plant seed potatoes about 3–4 inches deep with the eyes facing upward. Space them roughly 12 inches apart in rows. As plants grow, soil can be gently hilled around the stems to protect developing potatoes from sunlight.

Consistent moisture is important, but avoid overwatering, which can cause rot.

What to Expect After Planting

Potato plants will emerge in a few weeks. As they grow, healthy foliage is a good sign that tubers are forming underground. Potatoes are typically ready to harvest once plants yellow and begin to die back.

Frequently Asked Questions

Do I need special soil to grow potatoes?
Loose, well-drained soil works best. Avoid heavy or compacted soil.

Can I plant grocery store potatoes?
It’s not recommended. Certified seed potatoes are disease-free and produce better results.

How often should I water potatoes?
Water consistently, especially during tuber development, but avoid soggy soil.

How long does it take to harvest potatoes?
Most varieties are ready in about 90–120 days.

Visit Hebert’s Garden Center

Seed potatoes are available now at Hebert’s Garden Center & Landscaping. Stop by to pick up quality seed potatoes and get advice on planting, spacing, and soil preparation so you can enjoy a successful potato harvest.