Pro-Mix HP AGTIV Reach - 紧凑型 3.8 立方英尺

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.

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.

A wetting agent helps water spread and soak evenly through the root zone instead of beading up, running off, or channeling through one path, which makes hydration and nutrient flow more consistent. It’s important because it improves the water delivery system rather than feeding the plant directly, making it uniquely useful when the real problem is uneven wetting and dry pockets that can mimic deficiencies.