Bootstrap Farmer
5x5 Grow Trays - Extra Strength Inserts
5x5 Grow Trays - Extra Strength Inserts
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Guaranteed not to warp or break. These extra-strength BPA-free 5x5 inserts are perfect for smaller batches of microgreens, wheatgrass, and other crops. Our trays are made of heavy-duty, food-grade polypropylene plastic.
Made for anyone that wants to use their trays more than once. Our trays are built to be used for many years to come. Why throw away your trays after a single use? Save yourself time and money by reusing your trays which will keep both your pockets and the earth green.
These 5" x 5" inserts can be used indoors or outdoors and with both soil and hydroponic applications. Six drainage slits are used to remove excess water and allow use with flood trays.
Designed to be used with our 1020 flats and seed trays. Eight of the 5x5 trays fit into one standard 1020.
*Please note: These do not fit well in our 1010 trays. The 5x5s are designed to fit eight within a 1020 tray. Since our 1010 trays are designed to fit two into a 1020 they are slightly smaller and do not fit four 5x5 trays precisely. We recommend using trays of the same depth when nesting trays.
Note- Store trays out of direct sunlight when not in use. Prolonged exposure to direct sunlight will lead to degradation
Measurements:
Height | Top Width | Bottom Width |
2.25" | 5.125" | 4.25" |
Comparable size to 801 trays.
Weight per tray 0.10 lbs
Thickness: 1.8-2.0 mm

There are very few products out there that you buy once and it will keep on serving you. These can be reused year after year instead of ending up in the garbage can or landfill, so good for you and good for the environment. You pay a little more, but you save over time. I am absolutely sold on Bootstrap products.
What I like about the kit is that the plastic trays and dome are made of a very sturdy material, not like the flimsy trays I have used in the past. It was difficult to move full trays when they were not rigid. These trays are quite rigid and I think will make moving them much easier. They also seem like they will hold up longer with normal usage.
It was convenient to get everything I needed for a small seed starting in one package and I didn't have to search around for all the parts. It has the mesh bottom insert that seems to be necessary for use with soil blocking, so that was a big plus to me.
I am going to try the soil blocking, so I'm excited to try the blocker. Just getting everything set up now. However, the blocker seems to be in good working order even though I haven't actually used it yet.
One thing I think would improve the website is mentioning in the item description that the plastic is much sturdier than ones mostly seen in the stores. I wasn't quite sure that it was the sturdier version, but I decided to take a chance. Just making that clearer in the description would have been helpful. (i.e. "these trays and domes aren't the flimsy version you find in most stores!") I am sure people more used to using greenhouse products know that, but people new to that might not.