The idea behind a Seed Ball is to make an easy way plant a seed. You surround a seed with clay and other ingredients, let it dry and harden and then you can put it anywhere to dissolve and let the seed germinate.
There seem to be a number of recipes on the Net, so I’m going to experiment and come up with my own recipe.
Most Seedball Recipes contain these three ingredients plus water of course.
Clay-Compost-Seeds – there are many ratios.
5-3-1, 5-1-1, 5-0-1, 1-1-(two or three seeds per balls.)
From my gardening experience, putting a whole lot of seeds in one tiny ball doesn’t make much sense and is wasteful. I’d suggest one to 3 seeds per ball depending on how well the seed will germinate.
[Note - because of my poor germination, I'm going to try ten seeds per ball]
Experiment #1 – (results were terrible)
My first experiment is to just use some potting clay, roll it up and put a seed in side (zinnia). I also found that after the clay dries, you can color it with food dye. These balls can be made quite small. Most of mine are about the size of a nickel.
Experiment #2 – (I like this better, but still got poor germination)
I use 1 part dried clay, 3 parts compost and 1/2 part of water. It’s very sticky and easy to roll into a ball. I got about 50 balls using a 12 ounce cup as one part measure. I then added one or two seeds per ball. [Note - because of my poor germination, I'm going to try ten seeds per ball] The balls are slightly larger than a quarter. I made the balls first and then added the seeds, pressed the seeds to the middle of the ball and then rolled again. I then set them in the sun to dry. I got five pounds of dried clay from Krueger Pottery, 8153 Big Bend Blvd, St. Louis MO 63119 for $4.34.
Below are my seed balls in trays. I planted five different types of seeds in the balls. I also put some of my seed balls in my garden to see how they will germinate.
Here are the results of the seed ball test below. Not much is happening after two weeks. The balls with compost are doing better, but still not very good. At the two red arrows there are some tiny seedlings emerging from the seed balls.
I’m disappointed with the results, but will try again in the fall with some native seeds that need cold stratification – echinacea, milkweed, etc.
Note – try a different mix in the fall- add more compost and less clay
1 part dried clay, 5 parts compost and 1/2 part of water