House & Garden Soil A, 20 L

Soil-Specific Base Nutrient With Calcium, Part A, 20 L

Soil already carries a nutrient and microbial buffer that hydroponic reservoirs don't have, so a base nutrient built for soilless or hydro systems doesn't always match what a soil-grown plant needs or how fast it needs it. House & Garden Soil A is one half of the Soil A&B two-part base nutrient, formulated specifically for soil applications and built around balanced macro- and micronutrients plus a significant amount of calcium.

This 20-liter jug is sized for a larger indoor or commercial soil operation that goes through base nutrient at volume.

Key Features & Benefits

• Two-part system — pairs with Soil B in the ratio on the feed chart for complete base nutrition.
• Calcium included — supplies a significant amount of calcium alongside standard macro- and micronutrients.
• Soil-specific formula — built for soil applications rather than hydroponic or soilless systems.
• Multiple sizes — available from 1-liter bottles up to 200-liter drums for gardens of different scale.

Who Should Use a Two-Part Soil Base Nutrient

Soil growers who want a complete base nutrient, including calcium, formulated specifically for soil rather than adapted from a hydroponic feeding chart.

About House & Garden

House & Garden's fertilizer line traces back to founder William Van De Zwaan, whose background in commercial rose production in the Netherlands shaped the company's approach to nutrient formulation before it relocated manufacturing to Humboldt County, California, in 2015.

Frequently Asked Questions

Do I need both Soil A and Soil B?

Yes, Soil A and Soil B are designed to be used together as a two-part base nutrient, and one bottle alone won't provide complete nutrition. Follow the ratio and amounts on the House & Garden feed chart for your stage of growth.

Is this formulated for soil or hydroponic growing?

Soil A is built specifically for soil applications rather than hydroponic or soilless systems. Using a soil-specific base nutrient matters because soil already buffers pH and nutrient availability differently than an inert hydro medium.

Does Soil A contain calcium?

Yes, the Soil A&B combination includes a significant amount of calcium alongside its other macro- and micronutrients. That's built in rather than requiring a separate cal-mag supplement for most feeding programs.

What sizes does Soil A come in?

Soil A is available from a 1-liter bottle up through a 200-liter drum, so a grower can match the size to a small home garden or a large commercial operation. Soil B is sold in the same range of sizes to keep the two-part ratio easy to scale.

How do I use Soil A with Soil B?

Add both Soil A and Soil B to your reservoir or feed water together, following the ratio and amounts listed on the House & Garden feed chart. Adding only one half of the pair will leave the feeding program nutritionally incomplete.