Rocky Mountain October Garden Checklist: Winter Prep and Seasonal Enjoyment

October bridges autumn and winter in the Rockies—shorter, bright, cool days. Busy month to prepare for harsh cold while enjoying every outdoor moment.

Winterize Water Features

Freeze-thaw cycles damage fountains and ponds. Minimize damage:

1. Drain, clean, store or cover freestanding fountains and water pots.
2. Remove plant debris from ponds; set up bubbler (submersible pump with short pipe) to keep water surface ice-free.
3. Disconnect recirculating waterfall pumps, especially low-volume ones. Ice buildup diverts water; moving water cools ponds (issue for fish).

Prepare for Snow

Early snows are heavy, wet, and damage plants—especially those retaining leaves. Keep a broom handy to sweep snow off branches.

Winterize Irrigation

Frozen pipes are costly. Prevent by:

1. Drain irrigation system; insulate backflow preventer.
2. Remove hoses from faucets, drain, store with sprinklers for winter watering access.

Remove Leaves from Lawns

Leaves compact under snow, smothering grass and causing snow mold.

• Use whole or shred with mower/shredder.
• Compost now or stockpile.
• Use as mulch (4–6" deep): new plantings for soil warmth/root growth; bare soil for erosion control; after ground freezes to prevent frost heave/premature warming.
• Keep mulch 6" from tree/shrub bases to prevent rodent damage.

Remove diseased foliage completely—don't compost.

Amend Soil for Spring

Planning new vegetable/flower beds? Prepare now. Organic amendments increase water/nutrient holding, improve aeration/flow. Working dry soil prevents compaction from wet spring work.

• Mix amendments well—spade or rototill 6–8" deep.
• Composts/aged manures for sandy soils; sphagnum peat/wood chips for clay.
• Incorporate 3 cubic yards per 1,000 sq ft (~8 cu ft for 10x10 area).
• Mulch bed with 2" leaves/shredded wood to prevent winter erosion.

Enjoy Puttering

Pull weeds and spent annuals, plant bulbs, harvest herbs and cool-season veggies. Most of all, spend time with family and friends in October's glow.