Q:How and when to protect rhododendrons against frost?
O:Evergreen plantsdeciduous, not only rhododendrons, we protect them for winter only whenminus temperatureIn this group of plants, the most important thing is to protect them against the occurrence the so-calleddrought physiologicalwhich occurs when the ground is already frozen, plants cannot take water from it, and during the daystrongly operating suncauseslargelosses waterthrough the leaves.Strong, frosty winds also dry up the plants.
In regions of the country withlow temperatures , many plants should becoveralso before frost. Special shade nets are used to shade plants, while an excellent protection against frost iswhite winter agrotextile , which also shade plants. Especially young plants requirewinter coverIn addition to the cover of the shrub crown, the root ball should also be protected by adding a large layerunder the bushesbark gardening
P:I have had a rhododendron in my garden for several years. So far it has grown and bloomed very nicely. Since last year it seems to have stopped growing, the leaves have lost their shine, and now on two shoots they are curled into a tube and turn brown. Is it Phytophthora?
O:Symptoms indicate yes. But you can make sureby cutting sharp with a knifethe base of the plant. In case of infection, the color of the wood underbark will be rust redSuch a plant cannot be cured. The bush with the root ballimmediately need to removeandburnThe place after it should be decontaminated with a fungicide. Neighboring plants should beprophylacticallysprayed with appropriate preparations. Young plants should be planted in a specially prepared substrate consisting of a mixture of peat withcomposted barkThese ingredients inhibit the development of thispathogen You can buy ready-made mixtures for thisgroup plants
If there are onlydifferent kind stains , spray them with the appropriate preparations . Infested leaves should becollectanddestroy , especially before winter, as they are aplace for winteringthispathogena