Re: Re-OT Thistles


Sally:  

My advice is: watch them thistles! Like dandilions, the seed fluff of 
all the thistles I know about will float on the wind & make baby 
thistles wherever the seeds find a bit of soil. Unless you planted one 
of the thistles that also increases by underground creeping roots, you 
should be *fairly* safe if you religiously cut off all flower heads 
before they turn into seed fluff -- but I personally would not give 
garden room to any thistle. I worry that thistles have become or will 
become the kudzu of the north!

There's a very popular plant known as Sea Holly (Eryngium spp.) that has 
much of the look of some thistles but is (supposedly) benign re 
invasiveness. However, I shudder whenever I see it potted up at the 
nurseries & couldn't bring myself to plant it. Phobic, I guess.

Marte in the mtns

sdkeller wrote:
> 
> To John, Jeff & Marte,
> Am I in big trouble here?
> I never had any thistles in my yard until last year. I saw some       
> growing in a parking lot and cut some stems (with gloves) to take home 
> and use in flower arrangements. I'm a floral designer by trade.       
> Thought they lasted great in water and dried arrangements, saved some 
> seeds and planted a few in my perennial garden, where they have grown 
> quite well.
> Are they going to take over the world and become a problem?
> Sally in the Valley
> Zone 6  SE New York State
> Where the last iris bloom-DUSKY CHALLENGER got clobbered in a         
> horrendous thunderstorm last night.



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