Explore the best Cold Tolerant Indoor Plants that thrive in chilly conditions. These hardy houseplants bring nature’s charm to your cozy spaces!
01.08.2023 - 14:55 / gardenerstips.co.uk / hortoris
Whilst Rhododendrons have been regarded as ericaceous plants unsuitable for alkaline or limey soils the newly bred Inkarho plants may be an exception. It is also believed that some species and root stocks are tolerance of more alkaline conditions.
These German branded Rhododendrons have been developed to survive in soil which is less than perfect for Rhododendrons. They are all grafted onto a stock that is lime tolerant like the old variety Cunningham’s White or R. hirsutum or R. ferrugineum. The root ball tends to be quite large and robust on these varieties and that may account in part for the ability to withstand alkaline soils. Not everyone is impressed with the results attributed to this breeding programme and particularly the reasons for lime intolerance see Non Conformist Rhododendrons by David Rankin Â
His ‘suspicion is that there are in fact many more lime-tolerant species than we had been led to believe, or that at least there are tolerant strains. What we want to do next is to see whether these species growing on limestone are able to avoid absorption of calcium by their roots.’
I am happy to have the right soil for most Rhododendrons but here are a couple more pictures from Inkarho off spring.
Rhododendrons, which require a pH between 4.2 and 5.5but lime tolerant types of root stock can thrive with a pH between 4.5 and 6.5. An added advantage of plants which have been bred on lime-tolerant root stock is that they are stronger on normal soils.
RHS suggests other rhododendrons to try on alkaline soil:
R. augustinii (Electra Group) ‘Electra’ AGMR. ciliatum R. hippophaeoides R. ‘Praecox’ AGMR. triflorum
Explore the best Cold Tolerant Indoor Plants that thrive in chilly conditions. These hardy houseplants bring nature’s charm to your cozy spaces!
Summer is still here, and it is still HOT. What could be better than a glass of lemonade to beat the heat? As we approach the last few weeks of summer, preparations for the change of seasons begin. Youth and adults navigate the start of a new school year, retail stores reset for upcoming holidays, and small and large farmers transition into fall crops, winding down harvest of summer produce like tomatoes, corn, and blackberries, making them harder to find at local markets.
While flowering trees are what you want, drought tolerant trees are what you need. Fortunately, there are a number of drought resistant flowering trees that will adorn your garden while requiring minimal water. These types of plants can form the bones of a water wise landscape.
Rhododendrons have many praiseworthy characteristics.
The Lime is a tall growing well shaped tree which is often grown along avenues and public places in the UK. The flowers have an exquisite fragrance.
My Rhododendrons were in full bloom when a late frost caught them quite badly. Winter has been wet and mild but if the USA is anything to go by hard frosts may still be on the way so look after your early flowering Rhododendrons.
I just purchased a new containerised Rhododendron named ‘Sappho’. The picture on the label is of white flowers with spotted purple centres. There are lots of buds, about 20, and they are looking lilac. I thought of taking it back as that was not the colour I wanted.
Magnesian limestone grassland is uncommon in the UK but supports a wide range of plants and invertebrates. The dolomite or limestone has weathered to form thin lime-rich soils on which unique wildflower meadows have developed.
Arduaine Garden in Scotland is well-known in international Rhododendron circles for the number of wonderful species grown here, many of which are considered tender elsewhere and grow unusually under a canopy of mature Japanese larch. To some people, rhododendrons are those unpleasant purple-flowered objects which clog up our native woodlands. This is but one species, Rhododendron ponticum or a hybrid of it which spreads rapidly both by seed and sucker. Arduaine’s collection is extensive containing about 400 distinct species. The rhododendrons range from the large-leaved giants such as Rhododendron protistum, Rhododendron sinogrande and Rhododendron macabeanum to the small-leaved, high altitude plants which are often classed as rock plants, a sample of which would include Rhododendron fastigiatum, impeditum and orthocladum. In between these two extremes sit the majority of species of differing sizes with a variety of foliage shapes and an astonishing range of flower colour and form. One of the specialities is the only Rhododendron from Ceylon – Rhododendron arboreum subsp. zeylanicum.
Rhododendron Widgeon was been beaten to a great post by Jo Hanslip on insane journal
The two best complimentary colours are Red and Green. There are many ways this is demonstrated in the spring garden and they will be sure to draw compliments. The Peonies are just opening under a bit of shelter and shade.
When summer temperatures soar, heat-loving flowers will continue to thrive. Even heavy humidity won’t get them down. If you live in a warm climate, heat-friendly flowers are a necessity. If time is an issue, choose low maintenance, heat-tolerant flowers that don’t need deadheading or lots of water.