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Article #28Re: Common Ragwort, Senecio jacobaea - How Toxic?
From: Rod Craddock
Date: Thu, 29 Jul 1999 00:00
Date: Thu, 29 Jul 1999 00:00
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> actually Senecio jacobaea contains toxic alkaloids. Even the honey of > this species is reported to cause illness and psychoactive effects to > man. I�m a botanist (and teacher) but no veterinary physician, so I > can�t say, if such a big animal like a cow or a horse really is affected The received wisdom in the U.K. is that the plant too distasteful to eat when growing. However, when drying off after spraying or mowing it becomes more palatable and is highly toxic. So it is obviously important to eradicate it from fields used for hay etc. I think it is now no longer illegal to allow it to grow on your land(seems this law was quietly dropped when it became obvious the main offenders were highway authorities & local authorities) I am not 100% sure about that. Eradication efforts are patchy and probably fruitless in the long term. Worst infestations seem top be on land hopelessly overgrazed by horses. As for the honey, I haven't heard of actual poisoning of consumers, I believe the honey smells & tastes bad, when fresh from the hive but the flavour improves with storage, I generally find the bees prefer to work on other plants if they have the choice. Fireweed (Epilobium spp) flowers about the same time and bees much prefer it. Not much science in this, somebody else can do that. Rod
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 115fe3,2061d3aa7c92726f X-Google-Attributes: gid115fe3,public X-Google-Thread: 10f0bf,2061d3aa7c92726f X-Google-Attributes: gid10f0bf,public From: "Rod Craddock" <rod@gw4slk.freeserve.co.uk> Subject: Re: Common Ragwort, Senecio jacobaea - How Toxic? Date: 1999/07/29 Message-ID: <7nqeui$nh9$1@news8.svr.pol.co.uk> X-Deja-AN: 506723101 References: <RisseYAqZem3EwV2@dobx.demon.co.uk> <379B2352.69DE283B@t-online.de> X-Priority: 3 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 X-Complaints-To: abuse@theplanet.net X-Trace: news8.svr.pol.co.uk 933281554 24105 62.136.53.65 (29 Jul 1999 20:52:34 GMT) Organization: Customer of Planet Online X-MSMail-Priority: Normal NNTP-Posting-Date: 29 Jul 1999 20:52:34 GMT Newsgroups: uk.environment.conservation,bionet.plants