Tobias Ber wrote:hey sandra ...
welcome to the forums.
perhaps you should try other seeds. i use "normal" wheat which is not special sprouting seed. and it works well.
in trays i got mold all the time. no i do deeper containers. like the ones for balcony flowers. i sprout them in a jar, like you do. but i cover them with maybe half and inch of soil. adding lots of sand to the cover will help. i try to keep the surface dry. i water at the sides of the container, where water will soak deeply into the soil. sometimes i poke holes for drainage. i want the roots to have water but the surface to be somehwat dry.
i also have earthworms in the containers. they probably eat some stuff that is starting to rot.
in these containers i can go for 2-3 cuttings of grass. i also do barley grass, which i like more than wheat grass. i also do peas and sunflowers.
good luck and blessings
tobias