TNhunter
That last method your trying out sounds the best to me. Especially that extra amount of dirt and compost on top of the seeds before the leaves are put on will give you good germination. All sounds good to me.
Latt
I'm thinking when you say you are applying mulched leaves, they are chopped up leaves? I know about five years ago I applied about 3\" of maple leaves that were chopped up by running my lawn mower back and forth over them. But chopped up leaves compacted too tightly and I had to remove most of it because the little seedlings were struggeling to emerge. Up here in Maine I end up with about 4\" of fluffy sugar maple leaves in the fall to protect the seeds from frost heaves. In the spring the leaves are compacted to about 2\" and I remove about half of that before the seeds emerge so they find their way easily through the mulch.
Here is a few things I read from Scott Persons book:
\"Oak leaves are an inferior mulch because they contain tannic acid, and also because they are large, tough, and slow to decompose, which makes it difficult for young sprouts to force their way up through them to the sunlight in the spring.\"
\"If you have dense soil or very sandy soil, or a soil that is low in organic matter (testing below 5%), then it should benefit from tilling in two or three inches of shredded or patially decayed leaves and bark-preferably poplar or sugar maple, but leaves and bark from most any deciduous trees other than oak are acceptable. (Oak leaves contain tannic acid, which will lower pH and alter soil chemistry.)\"
\"In the northern part of ginseng's range, where additional mulch is added to the beds to prevent frost heaving over the winter, that extra mulch may need to be removed a few weeks before the plants break the soil surface.\"
I think that if you have a small percentage of oak leaves mixed with other leaves, that would be ok. Also in the spring check the thickness of your mulch and make sure that it's not thicker than about 1\". If not, remove the excess. Then the seedling won't struggle to emerge.
classicfur