Questions

I bought 2 big bags of daffodil bulbs last Autumn and planted them along the perimeter of my garden. I notice now that although most of the bulbs did produce foliage only a fraction of them have flowers. Apart from buying them cheaply what have I done wrong, and is there anything I can do now eg. feed/add fertiliser to hope they will flower next year.

I have one Laburnum tree for about 8yrs which flowers beautifully ever 2nd yr. It's stunning looking when in flower. But since we've had it I notice that alternate years it will only have 4 or 6 flowers. I don't do anything different to it any year to cause this, can you tell me why this might happen and what I can do to ensure it's beautiful every year.