Mums (Chrysanthemums) are perennial flowers that can survive winter if properly protected. Without the right care, cold temperatures can kill the roots, preventing regrowth in spring. Here’s how to winterize mums in the ground to ensure they return stronger next year.

Step 1: Stop Pruning After First Frost

• Once the first hard frost hits, stop trimming the plant.
• Leave wilted stems and leaves intact—these act as natural insulation.

See Also — How to Winterize Mums in Pots

Step 2: Add a Thick Layer of Mulch

• Apply 3–4 inches of mulch around the base of the plant.
• Use straw, shredded leaves, pine needles, or bark mulch for the best insulation.
• Avoid packing mulch too tightly—it should allow airflow to prevent rot.

Step 3: Water Before the Ground Freezes

• Give mums a deep watering before winter sets in.
• This helps hydrate the roots since dry soil is more prone to winter damage.

Step 4: Protect with Burlap or Covers (Optional for Harsh Winters)

• If temperatures drop below 0°F (-18°C), cover mums with burlap, frost cloth, or overturned baskets.
• This prevents freeze damage in extreme cold.

See Also — How to Winterize Single Pane Windows

Step 5: Avoid Cutting Back Until Spring

• Wait until early spring before pruning dead stems.
• New growth will emerge from the base once the weather warms up.

Bonus Tip: Potted Mums? Bring Them Indoors!

• If mums are in containers, move them into a garage or basement for winter protection.
• Water sparingly to prevent root rot.

Conclusion

Winterizing mums properly insulates the roots and protects them from harsh temperatures. By adding mulch, watering before winter, and avoiding premature pruning, you increase their chances of regrowth in the spring.

See Also — How to Winterize a Doggie Door

FAQs

1. Should I trim mums in the fall?

No, leave the dead stems intact to insulate the roots during winter.

2. What kind of mulch is best for mums?

Straw, shredded leaves, pine needles, or bark mulch work well.

3. Can mums survive without mulch?

In mild climates, yes. In colder areas, mulch is essential to protect the roots.

4. When should I remove mulch in the spring?

Gradually remove mulch when temperatures stay above 50°F (10°C).

See Also — How to Winterize a Toro Lawn Mower

5. Can I cover mums with plastic?

No, plastic traps moisture and can cause fungal growth or rot. Use burlap or cloth instead.