The Fraser Valley landscaping guide that starts below the surface

Know your ground before you spend a dollar

Good landscaping is local. The single biggest reason out-of-the-box plans fail in Chilliwack is that they ignore three facts about where we live.

We’re in hardiness Zone 7–8

The City of Chilliwack puts the area in plant hardiness Zone 7–8. In practical terms that’s a mild, temperate, coastal-influenced climate with a long growing season — roughly March through November — and winters that rarely stay deeply frozen. That’s a gift: it opens up a huge range of plants. But “mild and wet” is exactly what fungal disease, moss, root rot, and aggressive weeds love too, so the climate that lets you grow almost anything also punishes poor drainage faster than a colder, drier region would.

Our soil is mostly clay

Across much of the Valley floor, the topsoil sits over heavy, clay-rich ground. Clay is not “bad” soil — it holds nutrients well — but it drains slowly. Light clay will eventually let water pass; heavy clay can hold it on the surface almost indefinitely, which is why so many local backyards turn to soup after a single day of rain and stay that way. Healthy, deep-rooted grass and plants are part of what helps water work its way down through clay; bare, compacted ground makes the problem permanent.

We get a lot of rain — in bursts

The Valley funnels weather between the coast and the mountains. Fall and winter bring long, heavy rain events; spring can dump 100 mm-plus in a stretch, with soil saturation, erosion, and localized flooding a real concern in low-lying and riverside pockets. Then summer flips: hot, dry, and governed by watering restrictions. Designing for both extremes — not just the sunny photo — is the whole game.

It always comes back to water

If you remember one thing from this guide, make it this: in the Fraser Valley, drainage is the foundation of everything else. The prettiest patio, the lushest lawn, the boldest retaining wall — all of them fail early if water has nowhere good to go. Most of the outdoor problems we get called to fix trace back to water and weak prep, not to the visible feature itself.

Start with grade

“Grading” just means shaping the ground so water moves where you want it — generally away from your house, patios, and foundations, and toward a safe outlet. A surprising number of drainage complaints are solved not by fancy systems but by correcting a yard that quietly slopes the wrong way. Proper site grading is cheap insurance compared to a flooded crawlspace.

When grade isn’t enough

On heavy clay, regrading alone sometimes can’t move water fast enough. That’s where engineered drainage comes in — French drains (gravel-bedded perforated pipe), catch basins, and proper discharge points sized to actually carry our rainfall. A note from experience: the cheap thin-wall pipe sold everywhere in the Valley clogs and crushes in clay surprisingly fast. Drainage is one place where the right materials and slope matter more than the price tag, because redoing a buried system means digging the yard up twice.

Retaining walls do double duty

On a sloped or shifting lot — common across Chilliwack, the benchlands, and rural Agassiz and Hope — a retaining wall isn’t just landscaping decoration. It holds back soil, creates usable flat space, and, when built correctly, manages the water moving through that slope. A retaining wall without proper drainage behind it (gravel backfill, weep holes, drain pipe) is a wall on a countdown timer: hydrostatic pressure from trapped water is what makes walls bulge, crack, and lean.

Building the bones: hardscaping done right

Hardscaping is the hard, permanent structure of a yard — patios, walkways, steps, driveways, walls, stone features. Done well, it’s the part of your landscape that should outlive almost everything else. Done badly, it’s the part that fails most visibly and most expensively. The difference is almost always invisible: it’s the base.

It’s all about the base (and compaction)

Pavers and slabs don’t sink because the pavers are bad. They sink because the ground underneath wasn’t excavated deep enough, the base material wasn’t the right depth, or it wasn’t compacted in proper lifts. On our clay, that prep work — dig out, install and compact a road-base, set the bedding, then lay the surface — is the entire ballgame. A patio is only ever as good as the few inches you can’t see.

One more hard-won lesson: the more crews involved, the more places a project can fail. When excavation, base prep, grading, and the finished hardscape are split between separate contractors, the seams between them are where settling, pooling, and finger-pointing live. Keeping the full build under one crew and one standard is the most reliable way to make everything fit, drain, and hold up together.

Lawns that survive a Fraser Valley summer

A good lawn here has to live two lives: a soggy one and a thirsty one. Here’s how to set one up for both.

Sod, seed, or turf?

Sod gives you an instant, finished lawn and is the most popular choice for a fresh install — the catch is that it’s only as good as the soil and grading underneath, so prep comes first. Seed is cheaper but slower and needs careful timing (early fall is ideal in our climate; spring also works). Artificial turf has earned its place for high-traffic spots, deep shade where grass refuses to grow, pet areas, and anyone who simply doesn’t want to fight summer restrictions — though it still needs a properly draining base to avoid puddling. We install both sod and turf depending on what the space actually needs.

The maintenance that actually matters

The City of Chilliwack’s own natural-yard-care guidance lines up with what keeps lawns healthy here:

• Mow high. Longer grass shades out weeds and grows deeper, more drought-resistant roots.
• Leave the clippings (“grasscycling”). Free nitrogen, less waste.
• Overseed in spring and aerate to relieve compaction — critical on clay.
• Top-dress with a thin layer of fine compost to feed the soil.
• Don’t overwater. Most lawns need only about 2.5 cm (1 inch) of water per week, rain included. Overwatering builds weak, shallow roots.

Know the watering rules — they’re stricter than people think

Summer water restrictions are a fact of life here, and lawn watering accounts for roughly 30% of Chilliwack’s summer water use. The rules differ by city and can escalate stage-by-stage in a dry year, so always confirm the current stage with your municipality. As a general picture for a typical recent season:

Hand-watering with a shut-off nozzle, soaker hoses, and drip irrigation are generally allowed more freely than sprinklers, and brand-new lawns can often get a short-term exemption certificate while they establish. Two more things worth knowing: a golden, dormant summer lawn is normal and healthy — it greens back up with the fall rain (Chilliwack even runs a friendly contest for it) — and in BC, strata corporations generally can’t fine owners for a brown lawn during active water restrictions.

Planting smart for Zone 7–8

The easiest yard to maintain is one planted with species that already want to live here. Native and well-adapted plants need less water, shrug off local pests, and feed the birds, bees, and butterflies that keep a garden healthy. As summers trend hotter and drier, xeriscaping — designing for low water use with drought-tolerant planting, mulch, and efficient irrigation — is becoming the smart default, not a fringe choice.

Reliable Fraser Valley natives

A few simple planting rules for here

• Mix it up. Gardens with 10+ plant species attract the most pollinators. Stagger bloom times so there’s food from early spring through late summer.
• Build raised beds on clay. Rather than fighting heavy soil, raised beds and borders give you control over drainage and soil quality.
• Mulch. It holds moisture through dry spells, suppresses weeds, and slowly improves the soil.
• Water the first year, then back off. Even drought-tolerant natives need regular water until established — usually one growing season.
• Check the Latin name. Many “native” nursery plants are look-alike imports; the botanical name confirms you’re getting the real thing.

The invaders: blackberry, knotweed & ivy

The Fraser Valley is one of the most invasive-plant-pressured regions in the province. These species don’t just look messy — they crowd out everything else, damage structures, lower property usability, and in some cases are genuinely difficult and hazardous to remove. Knowing what you’re looking at changes how you deal with it.

Himalayan blackberry

The thorny thicket everyone recognizes. It spreads viciously — a single square metre of canes can drop 7,000 to 13,000 seeds, canes reach several metres, and it will swallow a fence line, slope, or back corner in a couple of seasons. Hand-pulling rarely wins because it regrows from the crown and root fragments. Effective removal usually means machine clearing the canes and digging out the root mass, then staying on top of regrowth. This is exactly the kind of overgrown-property reset our brush and blackberry clearing handles.

English ivy, periwinkle & the quiet creepers

Less dramatic but still destructive: English ivy and periwinkle form dense carpets that smother native groundcover and climb (and damage) trees and walls. Scotch broom, giant hogweed (toxic — its sap causes severe burns; never cut it casually), English holly, and lamium round out the usual Valley suspects. Some municipalities can fine for letting listed invasives spread.

A Fraser Valley landscaping calendar

Timing is half of landscaping success here. A rough rhythm for the year:

Tip: the smartest time to diagnose a drainage problem is during a heavy fall storm, when you can actually see where the water goes. The smartest time to fix it is the following dry season.

Landscaping & hardscaping where you live

Every community in the Valley has its own quirks — low-lying flood-prone pockets, benchland slopes, rural acreage, tight urban side-yards. We build for local conditions across the region:

Outside these towns? We serve surrounding Fraser Valley communities too — reach out with your address and a couple of photos to confirm availability.

Frequently asked questions