Almonds not producing blossoms

Im 600 metres altitude and planted around 12 almond trees of which most haven't produced any blossoms. Its coming up to the 3rd summer now for some of them.
Any ideas? Is it too cold or high?
Cheers
Sebastian

Sebastian,

I'm 350 m in a valley with a pronounced temperature inversion. What takes place in spring on the flatland, happens 6-8 weeks later at my location.
Also, you don't want your almonds to bloom too early and be destroyed by the late frost.

Sebastian Wolff wrote:Im 600 metres altitude and planted around 12 almond trees of which most haven't produced any blossoms. Its coming up to the 3rd summer now for some of them.
Any ideas? Is it too cold or high?
Cheers
Sebastian

You only mention your altitude, but not your climate or location, how large these trees were when you planted them, or whether they are grafted or seedlings. I wouldn't expect most seedling almonds to flower that soon from seed, but maybe a few of the more precocious ones. If the trees are grafted or were already a few years old when planted, then maybe it has to do with temperatures, water, or available nutrients.

Thanks for the answer guys.
So Im in the south Algarve - Mediterranean climate. I guess somewhere between an zone 9 and 10. The trees are all grafted. It seems down below by the coast the almond trees there all start to bloom (no leaves) in January then later get their leaves. is it that ever blossom produces an almond ? It also says its best ti prune them after they have blossomed. Is that right?

It may be they are still too young.  My almond tree took several years to get into gear, but it's flowering beautifully now, a mass of pink delight.  My main worry is for pollination:  it's been cold and damp and not many bees are out.  But then again, eighteen months ago we had so many almonds that we still have at least two baskets full of uncracked nuts.

Thanks so much :)

Sebastian,

I have two 5 year old almonds grown from seeds, they never bloomed yet.
I have several 9 year old pomegranates and they bloom 2 months after the pomegranates 300 meters below me. Even if you are zone 9-10, your nights can be still cold enough to retard the flower development.
Mountains are just different.