Daffodils flowering year after year
I have an area in the garden where I've planted daffodils and added a few every year from early to late. There are other smaller bulbs and some hyacinths, also Camassia. This spring I noticed daffodils appearing in smaller numbers. These bulbs are planted in clayey soil, I add compost every spring and shredded leaves. Despite that some have not appeared this season. I have heard of gardens where bulbs have remained in same soil for over 40 years and bloomed all that time. That is remarkable, but how do I get same results in my garden. I know it has to do with soil, what exactly is needed to achieve something similar. This bed is located between 2 black ash trees which suck out nutrients I add, I can see it in the way they grow. How can I overcome that?