rhododendron in clay soil uk

The right type of organic matter: leaves, semi decayed from oak are the best but there are other good things …read on. THIS IS NOT recommended though, just an example that R. maximum can tolerate wet sites in cool summer areas. Here are our top plants for clay soil. I my 40 years of exploring the Southeastern US I have notice the Rhodos evergreen and deciduous both not just growing, but rather thriving in leaf litter with thin sandy soils, often pure loose friable clay and then times rocky crevices. Mulching around the plants with a couple of inches of chipped bark will keep down weeds and help seal in moisture. Sadly, there really isn’t much info out there that talks about why certain plants die or don’t do well, often just the wrong info is told over and over. Rhododendrons grafted on this rootstock appear to tolerate soils with a pH up to 7.5. The Royal Horticultural Society is the UK’s leading gardening charity. Maximum light = maximum flowers. SOIL AND MULCH  The ONLY organic mulches you should use are oak, hickory or beech leaves or pine needles. Do not put thick layers of mulch on top of the rootball. Deciduous azaleas, larger hybrids and species can take some shade. FORGET EVERYTHING YOU KNOW ABOUT SOIL WHEN GROWING RHODODENDRONS …a  must read! Anything you like as long as it does not take all the moisture from the roots. ( Log Out /  I think one factor was overlooked though. You can prune most other rhododendrons back to where there is a circle of leaves (and therefore growth buds). This might be totally contradictory to what you have read …but it’s fact. Mix some organic matter (see above) into the existing soil as a planting medium. Posted by easternplant in RHODODENDRON, SOIL. There is nothing to hold onto, to stand up in, with soil that is too loose and friable. Unfortunately most clay soils are hard and compacted from mans use, construction & development …so are not suitable as is. See RHS Find a Plant for more choice rhododendrons. You might think (and books often say) it’s great for all plants, especially rhodos …experts say “its so friable and perfect.” NO and its deadly for rhodos. So you should be able to look up and see sky. Such a litter may be impenetrable to the little roots of seedlings. Who would have thought that earthworms would be a problems for rhodos? dichroanthum subsp. Then I saw the earthworm explosion. 5) 100% black dirt is not typical dirt. Just a few “walkings” over the root zone of a rhodo, where soil is like this, does harm. Ordering, History and Setting of Eastern Plant, in Georgetown, Maine. Rhododendrons need an open soil mixture. If you can't, you have a problem. Yes Rhodos and their friends need some organic matter, of the right type, but this isn’t it! Remember, rhodo roots are very shallow and very delicate, they rip apart easily and do not grow back fast. Everything you need to know about choosing the right rhododendron for you. Sand, gravelly soil or well drained loam is more vital to rhodo success than organic material …you heard it here! The mildew resistant foliage colours well in autumn to tones of dark pink and red. Plus, I had to water all the time. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected The roots of the tree will reach as far as the dripline (where the branches extend to). hippophaeoidesR. Feed and repot when plant becomes very pot-bound. All too often supposed landscapers do not know what they are doing; those who claim that title should have to prove they know something about the trade. The further north, the more light is required: in Cornwall you can grow in more shade than Scotland. Deadheading is largely a cosmetic exercise: only a few varieties produce seed at the expense of growth. 'Praecox' AGMR. Rhododendrons and azaleas will let you know if the pH is not correct. Hopefully this article will cause some commotion and controversy because it goes against much of what is often stated as good advice in books and articles on rhodos and their ***relatives. You must ensure good drainage as rhododendrons hate being in waterlogged containers. The species maximum (which we grow and have exceptional plants of) CAN tolerate wetter soil in northern climates. Folk like me, who garden on chalky soil, have to grow them in large pots or tubs of ericaceous (lime-free) compost, but if you garden on acid soil then you can plant them out and give them full rein. I just learned that here in Northeast Ohio, earthworms were wiped out by the glaciers about 11,000 years ago, so, for practical purposes, they are an invasive species! Most soil in Scotland is naturally acidic. When I see gardens, nearly any garden, mulched with them, that garden is dramatically better than others. A high level of organic matter in the soil is advantageous, particularly an acid medium such as peat substitute, chopped bracken or decayed pine needles but this alone will not bring about any appreciable reduction in soil pH, especially where the soil and ground water is alkaline. I have found almost all the forest plants I grow do better if there is some Calcium and Magnesium added. A SHOCKING TITLE BUT I HAD TO GET YOUR ATTENTION. DON’T FORGET TO READ THE COMMENTS AT THE END  …MORE GOOD INFO! CAN I PROPAGATE MY RHODODENDRONS AND AZALEAS? Trying to improve soil often ruins it. Ask neighbouring gardeners. The species most usually mentioned, Rhododendron hirsutum, is common on limestone ranges in the Dolomites but this on dolomitic or magnesium limestone rather than calcium limestone, which may explain its apparent tolerance of alkaline conditions. In my area inside the Cherokee National Forest rhododendrons thrive in very thin soil which is largely composed of sedimentary rock. The duff is the leaf and other plant litter that builds up into a thick layer in forests that have no earthworms, providing nutrients and a moist environment for developing an understory of shrubs and young trees. 1) This black dirt is MUCH MORE PRONE to soil compaction than sandy soil. Our current, extensive range includes: Rhododendron ‘Dufthecke Rose’ Inkarho: a compact, neat shrub in the ‘Dufthecke’ range, which translates to ‘fragrant hedge’ in English. Always a pleasure to read your well written pieces….THANK YOU!! I brought in truckloads of compost AND filled the yard with it. BLACK DIRT INVITES THIS LITTLE GUY! Hi Jim, yes there is so much wrong info out there on something as basic as gardening. (see example left of a hard pruned azalea with regrowth) This is best done immediately after flowering. Be wary of cheap soil test kits: you may need to do several samples to get consistent results. About the only thing you didn’t emphasize is the detrimental effects of peat moss. Ensure plant is well-watered (but allowed to drain) before planting. The Royal Horticultural Society is the UK’s leading gardening charity. Generally, it is difficult to alter soil pH in the long term. Phone: 01738 860260 Email gardencentre@glendoick.com, The Cafe is OPEN from 9.30am (10am Sunday) to 4pm Last orders for hot food 3pm, Soup 3.30pm, Coffee & Cake 4pm, Phone: 01738 860265 Email cafemanager@glendoick.com, Glendoick Garden Centre, Glencarse, Perth, PH2 7NS.

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