Decided to try some more flowers this year and liked the look of Salpiglossis, a chocolate one from Sarah Raven.
Opened the packet to find only about a dozen small blue seeds. Tried the first half dozen in cells of seed compost, placed on surface and lightly covered. Placed the tray on top of my heated propagator overnights (in the frost free GH) and moved it off during the day. The caulis, beetroot and one type of nigella (Damascena) have come up OK, but of the two other types of Nigella and the Salpiglossis not one has come up. Sowed on 31st March - am I being too impatient?
Before I try the last half dozen seeds of Salpiglossis, any suggestions either about what I've done wrong, or how I should do it?