Fall Garden Cleanup: Beds, Tools & Irrigation

Beds: what to clear, what to leave

The new wisdom on fall garden cleanup is more nuanced than “clear everything.” Hollow plant stems shelter native bees through winter. Seed heads on coneflowers and rudbeckia feed goldfinches and chickadees from December through March. Leaf litter under shrubs hosts overwintering ladybugs, ground beetles, and butterfly chrysalises.

Clear:

• Spent vegetable plants — tomato vines, bean stalks, squash vines.
• Anything with active disease (late blight on tomatoes, mildew on squash, black spot on roses).
• Weeds, especially anything that has gone to seed.
• Fallen apples and other fruit that harbour pests over winter (apple maggot, codling moth).
• Tomato cages and stakes — clean and store dry.

Leave:

• Coneflower and rudbeckia seed heads — cut them down in spring.
• Ornamental grasses — provide winter structure and shelter.
• Hollow perennial stems (bee balm, lavender, raspberry) — native bees overwinter inside.
• Leaf litter under shrubs and around perennial beds.
• Sedum and other dried perennial seedheads — visual interest plus seeds for birds.

Disposing of disease

Don’t compost obviously diseased plant material. Late blight, fusarium, club root, fireblight, and viral diseases survive composting at home temperatures. Bag and put in household garbage, or burn where local rules permit.

Healthy plant residue can go in the compost pile. Tough, woody material breaks down faster if chopped first — run a lawnmower over a pile of squash vines and they’ll be unrecognizable by spring.

Tools: clean before you store

A weekend of tool care in October keeps tools sharp and working for decades. Skip it and you spend April fighting rust and dull edges.

• Scrape soil off shovels, spades, hoes. A wire brush handles dried-on dirt.
• Wash with water, dry thoroughly. Even a small amount of moisture causes pitting over winter.
• Sharpen edges with a flat file — spades, hoes, and shovels all benefit. A sharp shovel cuts roots cleanly and digs faster.
• Oil metal parts lightly — wipe with motor oil, mineral oil, or vegetable oil. WD-40 works in a pinch.
• Sand handles smooth, oil with linseed or tung oil. Cracked handles get worse over winter; replace before storage.
• Pruners get a deep clean: disassemble if possible, remove sap with rubbing alcohol or steel wool, sharpen blades, oil pivots, store closed.
• Hang tools rather than leaning them against walls — less stress on handles, easier to find in spring.

Irrigation: drain before deep freeze

Water in lines that freezes will crack pipes and burst connections. The fix is simple but timing matters — do it before the first hard freeze, and definitely before nights stay reliably below 0°C.

• Garden hoses: Disconnect from outdoor spigots. Drain by walking the hose end-to-end while elevated. Coil and store somewhere above freezing — a heated garage or basement — to prolong the rubber.
• Outdoor spigots: Shut off the indoor valve that feeds them. Open the outdoor spigot to let any remaining water drain. Most newer Alberta homes have frost-free spigots that handle this automatically; older houses with regular spigots need the manual shut-off.
• Soaker hoses and drip lines: Disconnect, lay out flat, and either drain by lifting one end or blow out with a small compressor. Coil loosely and store dry. Lines left full of water rupture from internal ice expansion.
• Rain barrels: Empty, disconnect from downspouts, store upside down or on their side under cover. Frozen barrels split.

Final touches

• Top up perennial beds with 5 cm of compost or shredded leaves — works as winter mulch and breaks down by spring.
• Turn the compost pile one last time and cover with a tarp to retain heat and prevent winter rain from leaching nutrients.
• Empty pots used for annuals; if leaving plants outside in pots, move them against a south-facing wall and group together for warmth.
• Take a few photos of the garden — useful in March when planning what worked and what didn’t.