Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
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Lambert All Purpose Potting Mix is an all-purpose potting mix and ready-to-use soil for indoor and outdoor containers, made for potting and repotting a wide variety of plants. This versatile potting soil is designed to keep everyday planting projects simple, whether you’re refreshing a small pot or filling a very large container.
Built for indoor and outdoor gardening, this ready-to-use soil is suited to many common container styles and planting spaces. It’s a practical fit for small pots through very large containers, and it’s also well suited to planters like hanging baskets, window boxes, and whiskey barrels. If you’re setting up an interiorscapes area or maintaining a mixed container garden across seasons, Lambert All Purpose Potting Mix keeps your growing medium consistent across different plantings and pot sizes.
The blend is built around a straightforward component list that’s easy to match to what you want in a general-purpose potting mix. It’s made with Canadian sphagnum peat moss and horticultural perlite, and it includes a starter charge along with dolomitic limestone and calcitic limestone. These are the core inputs that define this Lambert potting mix, keeping it focused on broad, all-purpose container use.
Because it’s positioned as an all-purpose option, Lambert All Purpose Potting Mix is also suited to a wide range of plant categories and early-stage work. It’s listed for bedding plants, flowering plants, and foliage, and it’s also intended for cuttings and seed germination when a ready-to-use potting mix is preferred for starting work. That flexibility makes it a reliable choice when you’re managing multiple plant types and want one consistent all-purpose potting mix on hand.
This is a good fit for gardeners who want a Lambert ready-to-use soil for indoor and outdoor growing, especially for container projects that range from hanging baskets and window boxes to larger planters and whiskey barrels.
Calcitic limestone raises overly acidic soil toward a healthier pH range while adding slow, steady calcium for stronger roots and sturdier new growth. It’s important because pH controls nutrient uptake, and it’s unique because it buffers the root zone gradually instead of acting like a fast, temporary calcium boost.
Canadian sphagnum peat moss is important because it holds moisture evenly while still supporting air spaces that roots need for oxygen, which makes watering and nutrient uptake more consistent. It is unique because it naturally trends acidic and acts more like a moisture-and-structure foundation than a nutrient source, so it changes root-zone balance in ways other base ingredients do not.
Dolomitic limestone is both a gentle pH buffer and a slow source of calcium and magnesium, which is important because pH stability controls how reliably roots can access nutrients. It’s unique because it supports magnesium at the same time it neutralizes excess acidity, helping you avoid the common situation where pH improves but growth still struggles due to a weak calcium-magnesium foundation.
Perlite is important because it increases root-zone oxygen and improves drainage, helping roots stay healthy and active; it’s unique because its main benefit is physical structure and airflow—not nutrients or moisture storage—so it fixes “too wet and compact” root problems in a simple, predictable way.
A starter charge usually lasts until the plant’s roots and growth rate outpace the small pre-mixed nutrient supply, which is why it’s ideal for early establishment but not long-term feeding. It’s unique because it’s intentionally mild and temporary, acting as a gentle bridge for seedlings and transplants before a regular nutrition routine begins.

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