By Karenha
United Kingdom 
Planted polyanthus tuberosa bulbs about 6weeks ago and they're not growing. What have I done wrong?I put 10 in a large oblong planter about 6cm apart. Have removed them from the pot and they all have small White nodules on them, what does this mean.
On plant
Polyanthus tuberose.
5 Jun, 2011
Answers
I tried one year to no avail. I have heard that they are difficult. I think they might do better in a conservatory.
5 Jun, 2011
I'd heard the same - that it's difficult to get them to grow.
I found this useful question was asked just a short time ago -
http://www.growsonyou.com/question/show/46454
5 Jun, 2011
They need considerable heat to sprout--soil temps above 25ยบ C. A sunny greenhouse or conservatory may be necessary to start them in a timely fashion, in the UK.
6 Jun, 2011
Even in my conservatory they took in excess of six weeks.
I soaked them once every ten days or so. I wouldn't even attempt to start them off outdoors in the UK - you have no control over watering or temperature.
If they do come through, it is normal for the first leaves to look as if something has been chewing them.
6 Jun, 2011
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I planted mine about 8 weeks ago and there is still no sign of anything, haven't actually dug them to have a look though. I tried last year and was unsuccessful too. No idea why.
5 Jun, 2011