Park’s Original Bio Dome 60 Cell Seed Starter

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 with Park’s Bio Dome, your seeds will sprout and your sprouts will transplant easily into the garden.

This little powerhouse from Holland bears almost no resemblance to other seed kits, which tend to produce spindly sprouts with curled-up roots and limp stems. Park’s Bio Dome seedlings 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.

With the Bio Dome, you place only one seed in each Bio Sponge, which really helps stretch out today’s smaller seed-count packets. The only seeds unsuitable for the Bio Dome are very large ones (which you would want to direct-sow, anyway) and root vegetables needing space to grow their tuber (carrots, beets, radishes, etc). Everything else, from impatiens to petunias to tomatoes, does beautifully in these perfectly constructed Bio Sponges.

Before and after germination, your seeds receive just as much light, water, heat, and air circulation as they need, thanks to the adjustable vents and bottom-tray watering design of Park’s Bio Dome. 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.

Product consists of:
Bio Dome itself (green bottom tray and vented clear plastic top)
Planting block
60 Bio sponges
Seedling food
Complete instructions

If you’re new to using the Bio Dome, let us sing the praises of this, our most POPULAR PRODUCT OF ALL TIME. Customers love it, and even experienced seed starters like us, who have been dropping Marigold seeds into the soil since pre-school, have come to make the Bio Dome the ONLY SEED STARTING SYSTEM WE NEED. Here’s why:

Climate Control: you can remove the clear vent as the plants grow, but at first, especially if you’re starting seeds in late winter, it’s a real boost of warmth and humidity! And the two adjustable vents at the top make sure that your plants get good air circulation at all times.

Incredible Rooting Medium: in each hole of the polystyrene planting tray is what we call a “bio sponge,” a pre-formed plug of sterile medium with a hole already drilled in the top. The bio sponge is simply the best way we’ve ever found to reliably germinate and grow on seeds. We plant 1—ONLY ONE—seed in each bio sponge, even for difficult-to-germ varieties, and they nearly always sprout. (The only seeds you don’t want to grow in the Bio Dome are those of root vegetables like carrots, beets, and radishes—they need more space to grow their tuber than the bio sponge allows.) In all our years, we’ve just never had results like this from any other seed-starting medium, and we’ve tried them all twice. The bio sponge offers the perfect blend of aeration and moisture to help seeds of all kinds grow and cuttings to root.

Bottom Watering: you water the base of this tray, NOT the bio sponges themselves. Put enough lukewarm water into the base so that the polystyrene tray floats. The bio sponges will wick up just the water they need. And as your plants grow, their roots will go down and out, instead of spiraling or fanning out near the surface as you often see with top-watered seedlings. It’s impossible to over-water the Bio Dome.

Root Strength: this goes along with #3—these seedlings form LOTS of roots and grow them straight down and out, so that when it comes time to transplant the seedling, you can see roots sticking out all over the sides and bottom of the bio sponge.

Ease of Transplant: none of this business of transplanting the plug into a pot and then transplanting the plant out of the pot and into the soil. When you start your seeds in the Bio Dome, they can be transplanted straight into their final home. The bio sponge holds together, but the roots fan out easily beyond the sponge and into the garden or container soil.

Refills of the Bio Sponges are always available here at Park. And if you want bigger seedlings, we have a 40-cell and even an 18-cell size too. The good news is that their planting blocks fit into your standard Bio Dome, so you can swap out the planting blocks without having to purchase another Bio Dome. But if you’re like us, you’ll have 2 or 3 always full of seeds and seedlings before you know it.

Green base measures: 14 7/8″ long x 9 1/2″ wide x 2 1/4″ high
Clear top measures: 14 7/8″ long x 9 1/2″ wide x 4 1/2″ high
Original planting cells: 1″ wide x 2 1/4″ deep

Start growing the best garden of your life from seed right now using the Bio Dome—and continue for a lifetime. This is our all-time bestselling product, and one glance at the customer comments will show you why. Happy sowing!