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The Planting Block and Bio-Sponges You Need for Big, Healthy Seedlings Every Time!

40-cell Jumbo Planting Block

Accessories
Item # 96605
$19.95
Buy 2+ at $18.95 ea
Available to ship.

Have you been using a double Bio Dome? Two of these planting blocks fit perfectly into the double dome!

These are components of our 40-Cell Bio Dome Seed Starter, but also fit into the 60-Cell Dome.
Park's Original 60-cell Bio Dome Seed Starter revolutionized indoor seed-starting, and the 40-cell Dome, with wider and deeper bio-sponges and more space between seedlings, enabled gardeners to start larger seeds and grow seedlings out more fully before transplanting them. Now we're offering just the 40-cell planting block and bio-sponges, which you can put into the same Bio Dome you use for your 60-cell planting block.

When we say that this seed-starting system from Europe is revolutionary, we really mean it! Now you can start your favorite vegetables and flowers indoors, for earlier crops at a fraction of the cost of buying plants. And you can select the varieties YOU want (not the half-dozen choices the local garden center picked out), confident that your seeds will sprout and your sprouts will transplant easily into the garden!

Seedlings in Park's Bio Dome with 40 Jumbo Cells grow to a uniform height and width, thanks to the spacious distance between each growing cell. And our growing medium -- the Bio Sponge -- encourages root growth downward, NOT in an upward spiral that eventually strangles the plant! This environment offers such great growth conditions to the emerging seedlings that Bio Dome plants are usually ready to transplant a bit quicker than other seedlings -- and they suffer virtually no transplant shock in the garden.

Park's Original 60-cell Bio Dome Seed Starter revolutionized indoor seed-starting, and the 40-cell Dome, with wider and deeper bio-sponges and more space between seedlings, enabled gardeners to start larger seeds and grow seedlings out more fully before transplanting them. Now we're offering just the 40-cell planting block and bio-sponges, which you can put into the same Bio Dome you use for your 60-cell planting block.

Item Form Accessories
Size Jumbo 40-cell
Restrictions Canada, Guam, Puerto Rico, Virgin Islands

What are the differences between the various Bio Domes: 60-cell, 40-cell, and 18-cell?

The original 60-cell Bio Dome has a 60-cell planting block with 60 Bio Sponges and will produce 60 plants at one time. The 1" wide by 2 ¼" deep cells are larger than average, and a spacious 1 3/8" apart. The bio-sponges are the same size as the cells; 1" wide by 2 1/4" deep. You can grow and keep plants in the 60-cell bio-dome for 6-8 weeks before transplanting. Many varieties will just need 6 weeks until transplanting. Tomatoes and peppers would appreciate the full 8 weeks before transplanting. So, the original 60-cell bio-dome would be great for starting all of your favorite vegetable and flower seeds, with a larger number of plants produced at one time.

The 40-cell Bio Dome has a 40-cell jumbo planting block with 40 Bio Sponges and will produce 40 plants at one time. The cells are wider and deeper than the original 60-cell planting block and provide good spacing to maximize air flow. The cells are 1 1/4" wide by 2 1/2" deep. The Bio Sponges are also 1 1/4" wide by 2 1/2" deep. You can grow and keep plants in the 40-cell bio-dome for at least 6-8 weeks and some for up to 9-10 weeks, because of the wider spacing and cell/sponge size. It too would be excellent for starting all your favorite vegetable and flower seeds, with the added benefit of giving more room and time for larger plant development.

The 18-cell Bio Dome has an 18-cell whopper planting block with 18 Bio Sponges and will produce 18 plants at one time. It has the largest cells of any of the Bio Domes we offer and is great for growing extra-stocky transplants and even for rooting cuttings. The cells are 3" tall by 1 3/4" wide. The Bio Sponges are also 3" tall by 1 3/4" wide. You can grow and keep plants in the 18-cell Bio Dome for at least 8-10 weeks and some for up to 12 weeks, giving the maximum amount of growing time and spacing between plants as compared to the 60-cell and 40-cell Bio Domes. If you are looking to grow your favorite vegetable and flower seeds into large, stocky transplants for setting out in spring, then the 18-cell Bio Dome is the one you want to buy. It would be excellent for growing Tomatoes and Peppers.

How much water should be put in the Bio Dome and how often?

The beauty of the Bio Dome is that you cannot overwater! You just keep water in the tray and float the block. The larger the seedlings get, the more water they will use and you will need to add water more frequently as they grow. Initially, during germination, you may not have to water as frequently, because minimal water is being used and Bio Sponges will stay moist longer, so you may only have to water once every 1-2 weeks. Later, as plants grow and water use is greater, depending on the room temperature and the amount of light received, you may have to water more often -- possibly 1-2 times a week -- or as often as required to keep the sponges moist.