Bottom Heat

Starting seeds and cuttings is both faster and more effective with added bottom heat.

This is what I came upon last year... It works like a charm and is cost effective.

Talked to a friend of mine who has been running a small greenhouse operation for 25+ years... and this is what she recommended that I use.... yep, heated gutter cables. Apparently, she has been using them for years.  

They come in several lengths, are safe, inexpensive, and easy to use.

Last year, I just placed the cables on the table

squished the gutter clips in between the boards to kinda pin the cable down

 popped some wooden stakes onto the tables to keep the trays off of the cables ...

and it worked a charm :)

However

 the cable kept moving around

was a bit of a fuss to deal with

 though the bottom heat it provided was perfect.

This year...

 I screwed the boards into the two 4' tables

 went side to side this time, instead of top to bottom

 Less stakes were used and no more movement all over the place...

I stretched the cables taut between the stakes

pinned them down into place

so they stayed nice and tight.

Placed the trays of cuttings and seeds onto the stakes above the heating cables...

Covered them with clear plastic to retain humidity and moisture

 I often place the trays right into the bags and then keep them pinned closed.

This here is the super high tech garden product that I used to cover them with ;)

This year, I also found this other lovely idea that you might consider... :)