How to Grow Potatoes from Sprouting Potatoes: A Step-by-Step Guide for Maryland Gardeners
Step-by-Step: Growing Potatoes from Sprouting Pieces
1. Choose a Sunny Garden Location
Potatoes grow best in full sun, ideally receiving 6–10 hours of direct sunlight per day.
They also prefer loose, well-drained soil that allows tubers to expand easily.
Tip: If your soil is heavy clay (common in parts of Maryland), mixing in compost can greatly improve drainage.
2. Cut the Sprouting Potato into Pieces
If your potato is large, cut it into pieces so each section has at least one or two eyes (sprouts).
General guidelines:
Pieces should be about 1½–2 inches wide
Each piece should contain 1–3 eyes
A medium potato can usually be cut into 3–4 seed pieces.
3. Let the Pieces Dry (Important!)
After cutting, allow the pieces to sit at room temperature for 1–3 days.
This step allows the cut surfaces to form a protective layer, which helps prevent rot after planting.
4. Prepare the Garden Bed
Loosen soil to about 8 inches deep and mix in compost.
Potatoes prefer:
Slightly acidic soil (pH 5.5–6.5)
Loose soil that drains well
Create shallow trenches or planting holes.
5. Plant the Potato Pieces
Place each piece into the soil with the sprout facing upward.
Planting guidelines:
Depth: 3–5 inches deep
Spacing: 8–12 inches apart
Row spacing: 24–36 inches between rows
Cover with soil and gently water.
6. Hill the Plants as They Grow
As potato plants grow taller, they should be “hilled.”
This means pulling soil up around the stems to form a mound.
Why this matters:
Keeps developing potatoes covered
Prevents sunlight exposure (which causes potatoes to turn green and toxic)
Encourages more tubers to form
Continue hilling until the mound is about 6 inches high.
7. Water and Care for the Plants
Potatoes need consistent moisture, especially when tubers begin forming.
General care tips:
Water deeply during dry periods
Avoid overwatering
Add straw mulch to retain moisture and suppress weeds
When to Harvest Potatoes
You can harvest potatoes at two different stages:
New potatoes
Harvest 6–8 weeks after planting
Small, tender potatoes for fresh eating
Full-size potatoes
Harvest when plants yellow and begin to die back
Usually 90–120 days after planting
Dig carefully with a garden fork to avoid damaging the tubers. PRO TIP: Plant your potatoes in grow bags for easiest harvesting!
Common Mistakes to Avoid
Planting too early
If soil is colder than 45°F, potato pieces may rot before sprouting. In Maryland, that means late-March to early-April is the ideal planting time.
Not hilling the plants
Sunlight exposure causes potatoes to turn green and bitter.
Overwatering
Excess moisture can lead to rot and disease.
Why Potatoes Are a Great Crop for Maryland Gardens
Potatoes are well suited to Maryland’s climate because they thrive in cool spring weather before the summer heat arrives. Planting them early allows gardeners to harvest before soil temperatures climb above about 80°F, which can slow tuber development.
They’re also one of the most productive crops you can grow—often producing multiple pounds of potatoes from a single plant.
✅ Final tip: If you have sprouting potatoes in your kitchen right now, don’t throw them away. With a little soil and patience, they can turn into a full harvest of homegrown potatoes.