rosier malade ?

vous penser que mon rosier est pas bien
il as de petit boule sur les feuilles

bizarre

Oui j'avais eu un truc bizare (je n'ai plus le rosier) ... je vois pas ta photo Fleurie ?

ok je la vois maintenant , c'est pas la même chose... je sais vraiment pas c'est quoi

il as pas l'air bien je trouve ...

Ce que Franie avait eu sur son rosier c'est la gale du rosier ou cynips je crois

voir le lien pour une photo
http://www.univ-lehavre.fr/cybernat/pages/galle.htm

non pas la meme chose j'espere Ery pourras m'aider

d'autre photo .... personne as deja vu ca ???



les feuille sont plein de boule

Ouachhh Je sais pas si ça peut être fait par un insecte

Oh boy..... ça lui ressemble beaucoup en tout les cas!

bien oui la galle ... je vais tailler et voir se que sa va donner ...
merci !

J,ai trouvé ça ça serait du à une larve d'un insecte de couleur métallique. Le texte anglais
The plant galls mostly develop directly after the female insect lays the eggs. The inducement for the gall formation is largely unknown; discussion speculates as to both chemical, mechanical and viral triggers. The hatching larvae nourish themselves with the nutritive tissue of the galls, in which they are otherwise well-protected from external environmental effects. The host plants and the size and shape of the galls are specific to the majority of gall wasps, whereas about 70% of the known species live in various types of oak tree. One can find galls on nearly all parts of such trees, some on the leaves, the buds, the branches, and the roots. Other species of gall wasp live in eucalyptus trees, rose bushes or maple trees, as well as many herbs. Frequently, the determination of the species is much easier through observation of the galls produced rather than the insect itself.

A gall provides the developing gall wasp with a safe refuge for the most vulnerable stage of its life-cycle, however, many other wasps have found a way penetrate this defence and parasitise the larva(e) within. Some of these parasitoids use their long, hardened egg laying tube (ovipositor) to bore into the gall and lay an egg on the helpless gall maker. Collect a Bedeguar or robin's pincusions gall before the autumn and keep it somewhere cool. In the spring, you will see at least one species of parasitoid emerge instead of the gall maker. These wasps such as Eurytoma rosae are beautiful, metallic insects with long ovipositors. These parasitoids, may in turn, be preyed upon by other wasps, hyperparasitoids.[1]

Liens vers photos des différentes sortes de galles.
http://images.google.ca/images?hl=en&um=1&q=Diplolepis+rosae+roses&sa=N&start=36&ndsp=18

pour l'élimnation ils expliquent ici:
Control is best done by pruning out galls before the wasps have matured and emerged from the gall. Since adults emerge from the old galls in spring, prune out the galls after the leaves drop in fall, cutting below the gall and above a bud. Removing the galls from the garden may not totally eliminate future problems if adult wasps fly in from nearby areas. Timing for insecticidal treatment of these wasps is difficult and not suggested.

Insecticides have no effect on the wasp that causes mossy rose gall. The most effective control is physical removal and disposal of galls in autumn after leaves have dropped and galls are visible. It is important to dispose of all galls since even a single missed gall can produce and reintroduce 30 to 40 mature wasps to the garden the following spring.

Et bien ... les photos sur ton lien Tamie, les espèces de boules rouges ... c'est ça que j'avais eu sur mon rosier l'an passé et j'avais coupé ... probablement que je l'ai vu avant que les insectes fassent des dommages sur les feuilles ...

Je sais pas si ça arrive souvent, mais je vais faire une inspection de mes rosiers en fin de semaine au cas où