Bio Dome for Beginners Kit

Bio Dome for Beginners Kit

Everything Needed to Start Seeds Indoors!

40-Cell Original Plus Fertilizer, Seeds, Sea Magic, and Plant Labels
Item # 37281
Instock - allow 2-5 business days for processing prior to shipment.
Introduce a new gardener to the joy of seed-starting indoors with this exciting gift collection, or share the pleasure of using the Bio Dome with one of your gardening friends! This kit contains everything necessary to begin sowing seeds indoors for transplanting into the garden. No matter how much or how little experience the recipient has with growing from seed, they will be successful with the Bio Dome for Beginners Kit!

This gift assortment contains Park's Original 40-Cell Bio Dome, the revolutionary indoor seed-starting system that is our all-time bestselling product. Endlessly reusable, the Bio Dome consists of a sturdy green bottom tray, a clear plastic humidity dome with adjustable vents, a styrofoam planting block with 40 bio-sponges in pre-cut cells. The bio-sponges are the perfect medium for sowing seeds and growing big, healthy seedlings; just drop one seed into the pre-drilled hole at the top of the sponge, and it will sow and grow a healthy root system straight down toward the water at the base of the tray, while the top growth gets plenty of humidity and air circulation within the dome. The Bio Dome is perfect for the kitchen counter, the top of the fridge, and on top of heat mats and below grow lights. When the seedlings are big enough to transplant, just poke them out from the base of the tray: they pop out with roots and growing medium intact, ready to make their new home in garden or container!

To get the gardener started with seeds, there is a packet of Park's Whopper Marigold Yellow in this kit as well. Marigold starts in a snap from seed, so even new gardeners will have no trouble. And it's quick, so if you're giving this kit to a child, there won't be long to wait before those first shoots start appearing!

Our seedling fertilizer is added to the water in the Bio Dome as soon as the seedlings emerge, to increase the speed and vitality of their growth. And once the seedlings are transplanted into the garden, Sea Magic is an all-natural seaweed growth enhancer that can be sprayed right onto the foliage to improve nutrient absorption. Plants really take off with Sea Magic!

Just for fun, we've also included 50 plant labels in this kit. It's difficult to tell small seedlings of different varieties apart, and these labels will help keep things straight. They're also great for marking the date of sowing and the projected transplant time.

You don't have to be a new gardener to love the Bio Dome for Beginners Kit. Folks who have started seeds all their lives in egg cartons and seed flats have transitioned to the Bio Dome and absolutely love it. Share it with gardening friends this season and see what they think . . . and be sure to pick up one for yourself, too!

Review Summary
(Based on 2 Reviews)

Overall Rating: 4.5 / 5.0


Very pleased
Anonymous from GA wrote on October 21, 2016

I am very pleased with my Bio Dome and intend to continue using it for seed starting.

Bio Dome for Beginners Kit
Douglas from AR wrote on November 04, 2015

Ok, I haven't bought this kit, yet. But lack of "bottom heat" can be a problem in germinating some seeds and this kit doesn't provide that. Otherwise, great kit.

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

Bio Dome Instructions

Remove the Bio Dome Styrofoam blocks from the plastic wrap, keeping upright so that the plugs do not fall out. The plugs are ready to sow as they are!

For most seed types, place seeds into the pre-dibbled hole at the top of each plug. Tiny seeds that need light to germinate should be sown on the surface of the plug, not in the hole. Seeds do not need covering in the Bio Dome plugs. Each plug provides the optimum environment for germination.

Place the germination units in a favorable location as indicated on the seed packet.

To moisten the plugs it is best to soak them from the bottom. This can easily be done by putting water into the under trays provided and floating the Styrofoam blocks. It is not possible to over-water by this method.


Place the dome on the Bio Dome to maintain the humidity around the planted plugs. Keep moist until the seedlings emerge. Because of their composition, the plugs retain just the right amount of water. Less frequent watering may be needed and there is no danger of overwatering as with some other germination methods.

When you see that germination has started, open the vents on the Bio Dome. After the seedlings have emerged, remove the dome and provide more light. Use a grow light kept 1”-3” above the plants as they grow. This will prevent the seedlings from stretching and producing a weak plant. Brighter light will help keep the seedlings short and stout. Water as often as needed to keep the plugs moist.


Once the seedlings have developed their first set of true leaves, mix a weak fertilizer solution, following directions on the free fertilizer packet included with your Park's Bio Dome Seed Starter shipment. Water with this solution, instead of plain water; until the next set of true leaves develop. You can increase the concentration of the fertilizer solution once the second set of true leaves develop.

When the second true leaves appear the seedlings are strong enough to be transplanted. Transplant your seedlings, plug and all. To remove the plug from the block, poke out from the bottom and plant them where the plants are to grow.

If weather or timing delays your transplanting, often the roots will emerge from the bottom of the plugs. Prop up the blocks to allow some air space beneath them, until you are able to transplant but don't allow the plugs to dry. This builds a stronger root system within the plug.

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