Gordan Delta Gro-Blocks are the most uniform block available on the market. They feature improved grooves at the base to promote even better drainage. They are available in a large assortment of sizes and configurations to suit all types of plants.

These growing blocks are made for direct sowing or "blocking on" of Macro and Multiblock raised plants.

Hugo is the largest of the growing blocks. It provides enough growing volume to support a larger plant, so it does not need to be placed on top of a slab.

Grodan Delta Gro-Block Sizes

Delta 4 (3in x 3in x 2.5in) NO hole 8/sheet 384/case
Delta 4 (3in x 3in x 2.5in) lg hole 8/sheet 384/case
Delta 5.6 (3in x 3in x 4in) lg hole 8/sheet 256/case
Delta 6.5 (4in x 4in x 2.5in) sm hole 6/sheet 216/case
Delta 8 (4in x 4in x 3.25in) lg hole 6/sheet 180/case
Delta 8 (4in x 4in x 3.25in) NO hole 6/sheet 180/case
Delta 10 (4in x 4in x 4in) lg hole 6/sheet 144/case
Jumbo (6in x 6in x 4in) lg hole 1/sheet 36/case
Hugo (6in x 6in x 6in) lg hole 1/sheet 48/case