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Allotment Stuff => The Basics => Topic started by: small on September 04, 2010, 21:21:17

Title: Bean cross-pollination
Post by: small on September 04, 2010, 21:21:17
I grew Blue Lake beans from the dig-in freebies, very pleased with them so saved some seed - but they are much bigger than the original seed, have they crossed with the nearby runners? And will my runners have been crossed too? I just never thought......
Title: Re: Bean cross-pollination
Post by: Bugloss2009 on September 04, 2010, 21:34:44
I've noticed that our saved seed is bigger than seed from a packet. There's no benefit for seed companies in giving us big seeds - costs them in fertilizer and time, I suppose, for no gain for them

They won't have crossed with your runners, but your runners may have crossed with other runners. I save runner bean seed, even though they cross so easily. I buy a new packet after a few years and start again
Title: Re: Bean cross-pollination
Post by: small on September 04, 2010, 21:55:04
Thanks, Bugloss, that's a relief.  I am in an isolated garden not an allotment, so my runners have kept the same for over twenty years........I did like those Blue Lakes, though, thanks to whoever on this site pointed me to the dig-in stuff!
Title: Re: Bean cross-pollination
Post by: Digeroo on September 04, 2010, 22:04:54
I have got the occassional rogue in French beans but in general they come up true, so would expect your blue lake to be ok.   

There is a type of runner which has been crossed with a French Bean (moonlight) but I do not think it was easy to achieve. 
Title: Re: Bean cross-pollination
Post by: Bugloss2009 on September 04, 2010, 22:27:27
I might grow Moonlight next year. Though I wonder if the poor crop of runners this year for me hasn't anything to do with pollination, but just because runner beans haven't liked this year's weather.
Title: Re: Bean cross-pollination
Post by: aj on September 04, 2010, 23:01:39
They will shrink a bit whilst they finish drying out as well, so will get smaller [even though you might not notice it happening]...
Title: Re: Bean cross-pollination
Post by: Ninnyscrops. on September 04, 2010, 23:23:01
Scarlet Emperors always do me proud and did my grandpa too, sowing saved seed since 2005  ;)

Ninny
Title: Re: Bean cross-pollination
Post by: saddad on September 05, 2010, 00:06:19
Yep, basically Broad and Runners cross breed French don't...  :-X
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