This holds about 25 of the recycled newspaper paper pots shown in this post. Simply a pizza box lined with the plastic I took off the window (SPRINGTIME!). After filling the pots with soil and a variety of seeds and water I add another layer of wet newspaper. I then fold the plastic over to trap the moisture. A lamp heats the seeds to germinate quickly. I will pull the plastic back in about 5 days.
The goal of the two piece mold is to allow me to clean the wax out of the mold perfectly as well as dry the mold completely.
The wax sculpture before plaster The front half is dipped in the plaster. Oil is spread over the plaster bottom half and another layer is poured on. Then after setting the two halves are separated. The dark spots on the top half are babbit to allow for the nails to be pulled out even though they are not perfectly straight.
holes were drilled to allow the metal to flow into the mold. and i set a can in plaster to make a spout.
So the hop wintered over very well. very very well. All i did was cover it in a foot of mulch. So I guess that is adequate frost protection in pittsburgh.
For spring I just dumped the pot cut the thick coiling rhizomes and gave it fresh soil to work on. It had pretty much filled the pot with roots.
The dumping process was a challange. I was trying to lift it and found that it was very heavy. The reason was that the four small drain holes in the pot had huge roots growing through them anchoring the pot to the ground.
So when I say hops can grow in pots I guess I mean they can but try their best to get out. here are the shoots comming up in force for the spring: