At what time?
From early October to mid-November, it's the ideal. At the beginning of the season, you will find more varieties available and bulbs of good quality. At the end of the season, late November to early December, you will enjoy specials with, however, the risk of buying onions more or less damaged.

How not to ruin yourself ...
The most economical is to buy his flower onions in bulk. If the quality is not as homogeneous as that of large bulbs sold in bags, you will still get acceptable flowering in a garden style country and natural. Check out the good deals from the Dutch producers attending the autumn plant festival ( Courson , Saint-Jean-de-Beauregard ...).

... and not to be rolled?
Traps exist. Start by feeling the goods. The bulb should be firm, with no trace of mold. Compare the prices taking into account the sizes of the onions. The more plump they are, the more beautiful the blooms will be. As an informed consumer, you can buy by mail via the Internet or catalog and save money, but take care before to make a small test order.