burnt edges 2

haven't got any rhododendron/azalea myself but having had a quick google they seem to be affected by frost and the leaf tips turning brown is a sign of that. The site I just looked at said it was nothing to worry about and the plant should recover during the summer. I'll have a quick look in my books to see if I can find anything else out for you.

 

thanks glen

 

Although it may be frost Glen, that usually affects the flower buds, not the leaves. I think it's more likely some deficiency in the soil, or even over feeding.

I quote: growers have implemented many different feeding regimes over the years using a wide variety of fertilizers and whilst there have been varying degrees of success, there are several points upon which nearly all agree. Regular light applications of fertilizer are most beneficial, rather than high dosage fast-acting feeds, and Vireyas also respond well to regular foliar feeding. Care must be taken not to overfeed as this can cause unsightly leaf-tip burn and also damage the root system of a plant. If there is a build-up of salts in the compost from heavy feeding, the pot should be thoroughly soaked so the salts can leach away. Proprietary acid plant foods should be avoided, growers instead ideally using a fertilizer that is high in nitrogen, calcium and magnesium but with low potash, potassium and phosphorus levels.

 

no problem! The books seem to back up my earlier post, cold temperatures. They don't show any pest/disease that causes the leaves to go brown at the edges. Only other cause given is drought.

(edit- posted at same time as John, please read as reply to coub rather than a dig at John!)

happy gardening!

 

i'll bow down to your knowledge John, as I say I don't have rhody's, my soil is alkaline and I already have enough problems keeging my blueberries in acid conditions!

 

Thanks for advise but it is definatly not drought,I think it could be over feeding.But now should I take of the affected leaves?.

 

Don't think anyone suggested drought Coub. Personally I wouldn't take off the leaves until new ones appear or until they drop off naturally. But if there are plenty of healthy ones and the brown ones are very unsightly then you could take them off. But I think a half naked bush looks even worse than brown leaves.

 

Drought was mentioned Sarraceniac but as you say I will let the leaves drop of on there own.
And thankyou for all the help on this subject everybody.