Cultiwool Mini-Blocks 1.5" x 1.5" x 1.5" (2250/Case)

The Cultiwool Mini-Blocks 1.5" x 1.5" x 1.5" (2250/Case) are compact stone wool propagation blocks designed for seedlings, rooted cuttings, cloning, and young plant production in hydroponic and controlled-environment growing systems. Their uniform fibre structure helps maintain a balanced combination of water retention and aeration during the early stages of root development.

Each Mini-Block has a nominal size of 1.5 × 1.5 × 1.5 in, approximately 40 × 40 × 40 mm (4 × 4 × 4 cm). Each case contains 2,250 Mini-Blocks, making this format particularly well suited to commercial greenhouses, nurseries, propagation facilities, indoor growing operations, and high-volume horticultural production.

What Are Cultiwool Mini-Blocks Used For?

The Cultiwool Mini-Blocks are designed for the early stages of plant production, including seed germination, rooting cuttings, cloning, and young plant propagation.

Their compact format provides each plant with an individual, controlled root zone while allowing growers to maintain high plant density in propagation areas.

Once the root system is sufficiently developed, the Mini-Block can be transferred into a larger Cultiwool growing block, stone wool slab, or another compatible hydroponic growing system.

Key Benefits

• Professional stone wool propagation Mini-Blocks.
• Nominal size of 1.5 × 1.5 × 1.5 in.
• Technical dimensions of approximately 40 × 40 × 40 mm (4 × 4 × 4 cm).
• 2,250 Mini-Blocks per case for high-volume propagation.
• Approximately 0.064 L per block.
• Designed for seedlings, rooted cuttings, clones, and young plants.
• Uniform fibre structure supports consistent moisture distribution.
• Helps maintain a balanced air-to-water ratio around developing roots.
• Compact format allows efficient use of propagation space.
• Firm structure makes handling and transplanting easier.
• Can be transferred into larger Cultiwool growing blocks.
• Suitable for commercial greenhouses, nurseries, propagation rooms, and indoor growing facilities.

Why Choose Cultiwool Mini-Blocks for Propagation?

The compact 40 × 40 × 40 mm format provides each young plant with an individual root zone while allowing a large number of plants to be propagated within a relatively small area.

The uniform stone wool structure helps growers maintain more consistent irrigation and moisture conditions across large batches of seedlings or cuttings.

The small substrate volume also allows the root zone to respond quickly to irrigation, making these blocks particularly suitable for precisely managed propagation programs.

How Does Cultiwool Stone Wool Support Early Root Development?

Cultiwool stone wool provides a combination of water retention and air-filled pore space that supports early root development.

Its fibre structure holds moisture around the developing roots while maintaining oxygen availability within the substrate.

This controlled environment allows growers to manage irrigation, nutrient concentration, EC, pH, temperature, and relative humidity according to the needs of young plants.

Are Cultiwool Mini-Blocks Suitable for Seeds and Cuttings?

Yes. Cultiwool Mini-Blocks can be used for both seed germination and rooting cuttings.

For seeds, the compact format provides a defined root zone during germination and early seedling development.

For cuttings and clones, the stone wool helps maintain consistent moisture around the stem while new roots develop.

Efficient High-Density Propagation

With technical dimensions of approximately 40 × 40 mm, Cultiwool Mini-Blocks allow growers to maintain high plant density during propagation.

This makes them particularly useful for commercial operations where efficient use of propagation tables, plant uniformity, and production capacity are important.

Ideal Applications

The Cultiwool Mini-Blocks 1.5" x 1.5" x 1.5" (2250/Case) are suitable for:

• Seed germination
• Rooting cuttings
• Cloning
• Young plant production
• Hydroponic propagation
• Commercial greenhouse production
• Nursery propagation
• Indoor horticulture
• Controlled-environment agriculture
• High-density propagation
• Transplanting into larger stone wool blocks
• Professional horticultural production

Product Specifications

How Do You Use Cultiwool Mini-Blocks?

Before planting, prepare and hydrate the Mini-Blocks according to your propagation and nutrient program.

Place the seed or cutting into the appropriate opening and maintain suitable moisture, temperature, relative humidity, nutrient concentration, EC, and pH throughout the propagation period.

Avoid excessive saturation while maintaining enough moisture to support germination or root development.

Once the root system is sufficiently developed and roots become visible around the Mini-Block, it can be transplanted into a larger Cultiwool block or another compatible growing system.

Can Cultiwool Mini-Blocks Be Used for Seeds?

Yes. Cultiwool Mini-Blocks are suitable for seed germination and early seedling development.

Their compact size provides each seedling with an individual root zone while allowing growers to start large quantities of plants efficiently.

Can Cultiwool Mini-Blocks Be Used for Cuttings and Clones?

Yes. These blocks are also suitable for rooting cuttings and producing clones.

The stone wool structure helps maintain moisture around the stem while preserving the air space needed for newly developing roots.

Can Cultiwool Mini-Blocks Be Transplanted Into Larger Growing Blocks?

Yes. Cultiwool Mini-Blocks are designed to serve as an early propagation stage before plants are moved into a larger volume of growing media.

Once the root system is sufficiently developed, the entire Mini-Block can be inserted into a larger Cultiwool block so the roots can continue growing without removing the plant from its original propagation media.

What Is the Difference Between a Cultiwool Mini-Block and a Larger Growing Block?

The Cultiwool Mini-Block is primarily designed for propagation and early root development, while larger Cultiwool blocks provide additional substrate volume for later stages of plant growth.

The compact Mini-Block format allows high propagation density and responsive moisture management. Larger 4-inch and 6-inch Cultiwool blocks provide a larger root zone and greater moisture reserve as plants continue to develop.

Who Are Cultiwool Mini-Blocks Best For?

The Cultiwool Mini-Blocks 1.5" x 1.5" x 1.5" are particularly well suited to growers who need a uniform stone wool propagation substrate for producing large quantities of young plants.

The 2,250-block case is especially suitable for commercial greenhouses, nurseries, cloning and propagation facilities, indoor cultivation operations, controlled-environment agriculture, and professional horticultural producers.

Frequently Asked Questions

How many Cultiwool Mini-Blocks are included in one case?
Each case contains 2,250 Mini-Blocks.

What are the dimensions of the Cultiwool Mini-Blocks?
The nominal size is 1.5 × 1.5 × 1.5 in, approximately 40 × 40 × 40 mm (4 × 4 × 4 cm).

What is the volume of each Mini-Block?
Each block provides approximately 0.064 L of stone wool growing media.

What are Cultiwool Mini-Blocks used for?
They are designed for seed germination, rooting cuttings, cloning, and young plant propagation.

Can Mini-Blocks be used for seeds?
Yes. They provide a compact individual root zone suitable for germination and early seedling development.

Can Mini-Blocks be used for cuttings?
Yes. Their stone wool structure provides controlled moisture and aeration for rooting cuttings.

Can a Mini-Block be transplanted into a larger Cultiwool block?
Yes. Once the root system is well developed, the entire Mini-Block can be transferred into a larger compatible Cultiwool growing block.

Are Cultiwool Mini-Blocks suitable for commercial propagation?
Yes. Their compact format and 2,250-block case quantity make them particularly suitable for high-volume professional propagation.