Park's Double Bio Dome Seed-Starting System

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This "mini greenhouse" lets you control climate and conditions for best germination!

Bigger, healthier, better-rooted seedlings every time -- and twice as many of them!

A Park Seed Exclusive!

Park's Original Bio Dome Seed Starter revolutionized indoor seed-starting. Park's Original Bio Dome with 40 Jumbo Cells increased the size and root development available to new seedlings. And now we're proud to introduce the DOUBLE version of this mini-greenhouse! This system is so over-the-top successful that we have given it our name, so you know you're getting the very best!

When we say that this seed-starting system 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 Double Bio Dome, your seeds will sprout and your sprouts will transplant easily into the garden!

This little powerhouse bears almost no resemblance to other seed kits, which tend to produce spindly sprouts with curled-up roots and limp stems. Park's Double 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, such as carrots, beets, and radishes.

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 the Double 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.


Skip Product Specs
Color 80-cell Double Dome
Additional Characteristics Greenhouses, Seed Starting
Restrictions *Due to state restrictions we cannot ship to the following:
Canada, Guam, Puerto Rico, Virgin Islands

Product Review Summary

Based on 2 reviews
The average rating for this product is 3 out of 5 stars
Overall Rating: 3.0/5.0

Customer Reviews

March 22, 2022

Check for leaks before use

This shopper rated the product 1 out of 5 stars

I ordered a replacement double biodome tray. Had used several of the regular sized ones the last couple of years without problems but his one has a pinhole in it. Overnight it dripped across my kitchen countertops, on top of my wood bar stool, down the cabinets, over my wood floor, under the cabinets. A mess! Check yours for leaks before you use.

Teri from CA
February 26, 2022

So far, very good

This shopper rated the product 5 out of 5 stars

I like the instructions. Easy to follow. The seeds that I’ve planted are doing very well. Waiting for them to get their second set of leaves to replant. This is where I usually loose the seedlings. So far, this product has produced seedings better than any other product purchased at local area chain stores. The seedlings mostly do not make it this far. Thank you.

Laura from TX

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