It depends on the variety Mrs B!

Some varieties are perhaps just more sensitive than others.

I regularly try to grow Sunflower Hallo. Had success with them the first year. Now, I'm lucky if 50% germinate - but the Mixed Cut Flower seeds all came through in the same conditions 

Help please. I have a seed tray with six rows of cells, so I sowed three different types of beans, two rows of each. Two rows came up and some of the seedlings have already been planted in the garden (the others were two small but now the right size) but the other four rows were a disaster. Two seedlings barely raised their heads. I dug down into the cells today and discovered the remains of seeds but nothing else. I have been keeping them up in the attic, so it is not super warm. Perhaps I overwatered them but what does that say about the two successful rows?

Anton

I do not recognise these four-letter words of which you speak ... dust? iron?

 

All of it!  The only way I cope is to do 30 minutes a day.  The worst is cleaning the kitchen and bathroom floors.