Unfortunately, they start to fade here at the end of April

That is also the case with us. A few keep a little longer, but most of them have already withered away earlier. They are early bloomers.

The hazelnut orchards are on the slopes of the Black Sea region in Turkey

I think I read that Turkey is one of the most important countries for hazelnut production.

I hope your hazelnut tree will be fruitful.

I hope so too, but that also takes time... like here on Steemit :-)

Gardening is both the happiness of production and therapy for the soul.

This is very right! I'm not stressing about it either. If I don't feel like gardening, I just don't do it. I rather look forward to the many successes... even if or just because there are also failures.