Are egg cartons good for planting?

This seems like a common question and we see all kinds of videos of people using egg cartons to start seeds and/or seedlings.

I decided to actually try using these egg cartons to see if these can truly function as a critical starting location for a delicate flower seed.

With this Reuse mindset in place I decided to also test using several other packaging to see what others could be effectively used for planting.

I wanted to try this containers:

• Kleenex boxes
• Ice Cream Containers
• Milk Cartons
• Egg Cartons

Kleenex boxes, I decided to place the opening on the down side and cut out a rectangle in the bottom and allow the cut out part to act as covering for the Kleenex box opening (now on the bottom).  This should prevent dirt from falling out and still allow roots to pernitrate the bottom and dig deep into the ground.     I am most concerned with this solution as water does a number on the structure and firmness of these flimsy boxes.

Ice Cream Containers –  Just clean out and filled with soil.  To allow for  Seems like a good solution

Milk Cartons – I just cut off the top part, rinsed and filled with soil.

Egg Cartons – I just separate the top and bottom parts and used the top as the bottom of this new Planting tray.   I prevent moisture from quickly evaporating into the air, I lined the bottom (top of Egg carton) with a Plastic Bread bag and then added the bottom of the Egg carton to create planting sockets for new seedlings.