Overwintering Sale Perennials: Plant Now, Don't Store in a Cave

A West Virginia gardener (zone 6) bought end-of-season perennials (mums, ornamental grass, flowering cabbage) and considered storing them in a "cave" until spring.

Immediate Planting Is Best

Plant them now in the ground. Mulch heavily (4-6 inches) with pine needles, shredded leaves, or straw after the ground freezes. This insulates roots and prevents heaving.

Plant-Specific Notes

• Mums (Chrysanthemum): Hardy perennials if planted early enough to root. Cut back after frost; mulch.
• Ornamental Grass: Most are very hardy. Leave foliage for winter interest; cut back in early spring.
• Flowering Cabbage/Kale: Not perennial. Biennial—will bolt and set seed next spring if it survives. Treat as annual color.

Why Not the Cave?

Container plants in unheated spaces suffer extreme temperature swings, drying out, and root death. Ground planting provides thermal mass and moisture stability.