Why Are Your Potato Plants So Tall?

Growth Requirements

• Potatoes like plenty of sun and fertile soil with a pH of 6.0 to 6.5. After planting in springtime, the large plants grow vigorously during the growing season and often reach 3 feet in height.

Plant Height

• Potato plants grow fairly tall if subjected to healthy growing conditions and extra fertilization. Once plants reach 1 foot tall, mound around them with soil to protect the developing tubers from oxygen exposure, which turns them green.

Harms

• If potato plants are tall and spindly, this may be a result of inadequate light, as is the case with many plants that seek sunlight. Tall potato plants is not necessarily a bad thing; as long as the plants are healthy enough to support themselves, they produce large potatoes.