Collane schreef op donderdag, 21 juli 2005, 13:05:


Tansy Ragwort or Common Ragwort, Senecio jacobaea, is usually considered to be a biennial, over wintering either as seeds or as rosettes, but it is also capable of becoming a perennial through environmental stress or interference by competitors, herbivores, or control tactics.

van deze site:
http://www.rag-fork.co.uk/ragwort.html

en hier:
http://www.hdra.org.uk/organicweeds/weed_information/weed.php?id=13
Biology: When allowed to grow and set seed ragwort is biennial. If it is defoliated it behaves as a perennial. As a biennial, ragwort will only flower after exposure to winter cold. Rosette size is also important as plants must attain a threshold size to be able to flower and this may take more than 3 years. The threshold size for vernalisation varies among populations. Plants vernalised during the winter may or may not flower depending on conditions in spring. The flowering period is long, starting in mid-June and continuing until November, being especially prolonged if plants have been damaged in the first flush of flowering.

Dus, simpel gezegd, 2 jarig tenzij het beschadigd wordt, dan leeft ie langer door.
Maar of je dat nou allemaal in je brief moet verwerken, lijkt me niet het belangrijkste van je boodschap.
Isabel

Collane schreef op donderdag, 21 juli 2005, 12:57:


Koeien geiten en schapen gaan er ook aan dood, dat zou ik er ook bij vermelden, dus niet alleen paarden. Goed initiatief Collane, mijn brieven gaan ook de deur uit.
Misschienhandig om alle adressen van betreffende ministeries ook op de JKK aktie lijst te vermelden?

Groeten Esther