Pro-Mix Cactus Mix - 5 Litre

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.

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.

Yes, when soil is too acidic, limestone can help plants grow better by gently raising pH and supplying calcium so roots can absorb nutrients more smoothly. It’s unique because it fixes the root-zone chemistry itself, which can solve several “mystery deficiencies” at once, but if used when pH is already high it can trigger micronutrient lockout instead.

Mycorrhizae form a living partnership with roots that expands the plant’s effective root reach, helping it gather water and hard-to-reach nutrients more efficiently. They’re important because they improve steadiness and stress tolerance over time, and they’re unique because they physically connect to roots and build a fungal network in the root zone rather than acting like a direct nutrient input.

Organic-based fertilizer is slower because its nutrients are released as the root zone breaks down organic particles over time, so it feeds plants through steady biological conversion rather than instant availability, which is what makes it uniquely good at supporting long-term root health and stability.

Peat humus acts like a sponge and a gentle nutrient holder in the root zone, smoothing moisture and nutrient availability so roots can feed more consistently. It’s important because many “deficiency” symptoms come from unstable water and nutrient swings, and it’s unique because it improves the root environment rather than providing a fast nutrient hit.

No, sand only improves drainage when the grains are coarse enough and the rest of the soil mix supports larger air spaces; fine sand can actually pack the soil tighter and reduce oxygen for roots. That’s why sand is unique compared to other structure ingredients: it can either open the mix or clog it, and the plant’s symptoms often look like watering or nutrient problems rather than a “sand problem.”