INKARHO Lime-tolerant Rhododendrons

These are the plants which we have featured in our recent RHS Chelsea Flower Show exhibits, with extensive reporting on the BBC Chelsea TV programme. Interest from new customers around the country has been exceptional, and gardeners have been delighted to learn that they can now grow their favourite plants on most garden soils.

The revolutionary new "Inkarho" lime tolerant rootstock is particularly recommended for growing Rhododendrons on neutral clay soils, up to pH7. This patented rootstock was developed from a Rhododendron growing in a German lime quarry, and has been the subject of an extensive 20 year breeding and testing programme. These plants are grown under licence in Germany, and enable choice hardy hybrids and yakushimanum varieties to be grafted on the rootstock and grown in a much wider range of soil types than ever before. They are hungry plants and require more feeding than other Rhododendrons to keep their foliage a healthy dark green. We recommend our own recipe Millais slow release fertilizer and plenty of good Ericaceous compost for best performance.

Please note that some of these plants are broader than they are in height, and that the specimen sizes (eg 90-100cm) are measured by the larger of the height or width.

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Rhododendron (yak) Anuschka INKARHO
Rhododendron (yak) Anuschka INKARHO
Now available on the Inkarho rootstock! Striking bright red buds open to gorgeous rosey pink flowers in late May. A lovely very hardy yakushimanum hybrid that has attractive dark green foliage. Height 75-100cm in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Tough and reliable variety. Easy to grow. Ideal position: Most garden situations. Habit:...
from £26.95
Rhododendron (yak) Dreamland  AGM INKARHO
AGM
Rhododendron (yak) Dreamland AGM INKARHO
Now available on the Inkarho rootstock! This plant has very pretty pale pink flowers with darker edges. It flowers in May and has wonderful stiff green leaves with pale undersides. Height 80-100cm in 10 years. This plant is one of our most popular sellers and is consistently reliable.Plant with plenty of good ericaceous compost to aid establishment. Ideal for containers and small gardens. Easy...
from £195.00

Rhododendron (yak) Fantastica  AGM INKARHO
AGM
Rhododendron (yak) Fantastica AGM INKARHO
Now available on the Inkarho rootstock! Stunning red flowers with a paler centre fading to an attractive pink in May. We think this is one of Hachmann's best hybrids and very striking. It has dark foliage which really sets off the flowers nicely. Height 100-120cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Ideal for containers and small gardens. Easy to grow. Group:...
from £325.00
Rhododendron (yak) Kalinka INKARHORhododendron (yak) Kalinka INKARHO
Rhododendron (yak) Kalinka INKARHO
Now available on the Inkarho rootstock! This lovely plant is red in bud, opening to ruby pink flowers with ruffled darker edges. It fades to pale rose pink with greenish yellow spots in May. It has a compact habit and dark shiny leaves with thin brown indumentum on the underside. Height 100cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Ideal for containers and...
from £26.95

Rhododendron (yak) Lupinenberg Laguna INKARHORhododendron (yak) Lupinenberg Laguna INKARHO
Rhododendron (yak) Lupinenberg Laguna INKARHO
(H6) NEW and now available on the Inkarho rootstock! Purple buds open to deep mauve flowers with green yellow speckling, in late May. An excellent neat and compact growing yak hybrid with the deepest mauve flowers. Bred in Northern Germany, and very hardy to -20°C. Height 75-100cm in 10 years. Also known as Bohlken's Lupinenberg Laguna. Lupinenberg translates to 'Lupin Mountain'. Developed at...
£26.95
Rhododendron (yak) Polaris AGM INKARHORhododendron (yak) Polaris AGM INKARHO
AGM
Rhododendron (yak) Polaris AGM INKARHO
Now available on the Inkarho rootstock! This tough little plant has red buds opening to ruby pink, ruffled flowers with a paler centre in May. It has good foliage and is wind, sun and cold tolerant. Height 80-120cm in 10 years. Also known as Hachmann's Polaris. Plant with plenty of good ericaceous compost to aid establishment. Ideal for containers and small gardens. A tough variety that is easy...
from £249.00

Rhododendron (yak) Schneekrone AGM INKARHO
AGM
Rhododendron (yak) Schneekrone AGM INKARHO
Now available on the Inkarho rootstock! Beautiful white flowers tinged soft pink and spotted ruby red, in a ball shaped truss. Flowering in May we think this is one of the best white yaks (compact Rhododendrons) for cold climates. Height 80-100cm in 10 years. The English translation is Snow Crown, and it certainly has a majestic flower! Plant with plenty of good ericaceous compost to aid establishment. Recommended...
from £26.95
Rhododendron (yak) Sonatine INKARHO
Rhododendron (yak) Sonatine INKARHO
Red in bud, opening to deep pink flowers, with a slightly creamy and speckled centre. Flowering from mid to late May, this is a tough plant from Hachmann's in Northern Germany. Lovely dark green leaves with a thin silvery grey indumentum on the undersides. Height 100-125cm in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Ideal for containers and small gardens. Easy...
£395.00

Rhododendron (yak) yakushimanum 'Koichiro Wada' INKARHORhododendron (yak) yakushimanum 'Koichiro Wada' INKARHO
Rhododendron (yak) yakushimanum 'Koichiro Wada' INKARHO
Now available on the Inkarho rootstock! Pink in bud opening to delightful white bell shaped flowers in May that have the appearance of apple blossom. Koichiro Wada has silvery new growth which turns dark glossy green, with dense brown indumentum underneath the leaf. There is a distinctive white covering (tomentum) on the top of the leaves. Height 50-75 cm in 10 years. This is generally accepted to...
£249.00
Rhododendron Azurro INKARHORhododendron Azurro INKARHO
Rhododendron Azurro INKARHO
Now available on the Inkarho rootstock! Distinctive frilly edged purple flowers with a darker blotch. This stunner flowers in late May to early June. It is a very tough plant with a great compact habit. We are very keen on this plant because it has proven to be even more reliable than it's parent, Purple Splendour. Height 150cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Recommended...
£26.95

Rhododendron Bellini INKARHO
Rhododendron Bellini INKARHO
Now available on the Inkarho rootstock! This is a good tough yellow from Northern Germany with bright yellow flowers with dark red markings in the throat during May. Height 130-160cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Tough and reliable variety. Easy to grow. Ideal position: Most garden situations. Habit: Dense. Group: Hybrid Rhododendron...
from £26.95
Rhododendron Bloombux INKARHO
Rhododendron Bloombux INKARHO
(H6) NEW. A wonderful flowering alternative to troublesome box hedging! Lots of clusters of soft pink flowers in June. The plant responds well to trimming after flowering. Height 50-75cm in 10 years. Easy to grow in most soils. This superb new variety was raised by the INKARHO syndicate as 'Microhirs3' with PBR Plant Breeders Rights. It is suitable for growing on most garden soils, from very...
from £4.95

Rhododendron Catawbiense Boursault INKARHO
Rhododendron Catawbiense Boursault INKARHO
(H7) Long lasting lilac purple flowers with few markings. Late May flowering in a dense truss. A vigorous, very tough old variety, dating from before 1850, and hardy to -30C. Height 175-200cm in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Hedging/screening. Easy to grow. Ideal position: Most garden situations. Habit: Dense. Group: Hardy Hybrid. Tolerant...
from £375.00
Rhododendron Catawbiense Grandiflorum INKARHO
Rhododendron Catawbiense Grandiflorum INKARHO
(H7) Long lasting lilac purple flowers with yellowish red markings. Late May flowering. A vigorous, very tough variety, dating from before 1850, and hardy to -30C. Height 175cm in 10 years. plant with a good ericaceous compost
£26.95

Rhododendron Constanze INKARHO
Rhododendron Constanze INKARHO
Now available on the Inkarho rootstock! Lovely rose pink flowers, paler in the throat, with wine red spotting on upper lobe. Flowering in late May this is a very hardy plant from Hachmann's Nursery in Northern Germany which grows wider than high. Height 140 -160cm in 10 years. Registered name is Hachmann's Constanze.Plant with plenty of good ericaceous compost to aid establishment. Recommended...
from £26.95
Rhododendron Cunningham' s White INKARHORhododendron Cunningham' s White INKARHO
Rhododendron Cunningham' s White INKARHO
Now available on the Inkarho rootstock! Mauve buds open to white flowers with a pale yellow eye in early May. With delicate small flowers, it is a very tough dense plant which is good for screening and difficult positions. Height 140-160cm in 10 years.It certainly ranks as one of our favourites and is ideal for hedging and screening. If you have a difficult position this tough plant will perform well....
£26.95

Rhododendron Dufthecke Lilac INKARHO
Rhododendron Dufthecke Lilac INKARHO
Available on the Inkarho rootstock! Lilac purple opening to lilac and flowering in April-May. It has fragrant flowers on a plant of neat compact growth with attractive shiney leaves. Height 125-150cm in 10 years. This one is ideal for hedging and screening. The German translation of Dufthecke is fragrant hedge! Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Hedging/screening...
from £26.95
Rhododendron Dufthecke Rose INKARHO
Rhododendron Dufthecke Rose INKARHO
Available on the Inkarho rootstock! Deep pink in bud opening to attractive pale pink flowers in early May. It has fragrant flowers on a plant of neat compact growth with attractive shiney leaves. Height 125-150cm in 10 years. This one is ideal for hedging and screening. The German translation of Dufthecke is fragrant hedge! Plant with plenty of good ericaceous compost to aid establishment. Recommended...
from £26.95

Rhododendron Dufthecke White INKARHO
Rhododendron Dufthecke White INKARHO
Available on the Inkarho rootstock! Intense lilac in bud, opening to creamy-white flowers with a pale rose-lilac edging. The beautifully scented flowers change gracefully to icy white in April-May. It has nice glossy pale green leaves on a plant of neat compact growth. Height 125-150cm in 10 years.This one is ideal for hedging and screening. The German translation is fragrant hedge! Plant with plenty...
from £26.95
Rhododendron English Roseum INKARHO
Rhododendron English Roseum INKARHO
Now available on the Inkarho rootstock! Attractive mauvey pink flowers in May-June on a very useful easy to grow plant. It tolerates heat and cold and is a dense and vigorous grower that can get very large. An ideal plant for hedging and screening. A reliable plant for difficult places. Height 180cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Hedging/screening. Easy...
£26.95

Rhododendron Furnivall's Daughter AGM INKARHO
AGM
Rhododendron Furnivall's Daughter AGM INKARHO
This is a popular and very showy plant with bright pink flowers and a large strawberry red flare, in a full conical truss. It is free flowering in May to June. Height 140-160cm in 10 years. Furnivall's Daughter can be a bit weak on its own roots, so grafting onto the strong Inkarho rootstock is ideal. Sometimes spelt incorrectly as Furnival's Daughter. Plant with plenty of good ericaceous compost...
from £26.95
Rhododendron Germania INKARHO
Rhododendron Germania INKARHO
Now available on the Inkarho rootstock! This is an outstanding plant introduced from Hobbie in Germany, with huge buds opening to deep pink flowers in a large upright truss during late May. It has an excellent habit, is tough and has large pale green rounded leaves. Tends to grow wider than it is tall. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Striking...
£26.95

Rhododendron Gomer Waterer AGM INKARHORhododendron Gomer Waterer AGM INKARHO
AGM
Rhododendron Gomer Waterer AGM INKARHO
Now available on the Inkarho rootstock! Lovely rosy-lilac buds open to white flowers flushed mauve pink at the edges with a distinctive yellow-brown flare. This plant is a well proven older variety that flowers well in early June. It certainly ranks as one of our favourites and is ideal for hedging and screening. If you have a difficult position this is definitely the plant for you. Vigorous and tolerating...
£26.95
Rhododendron Graffito INKARHORhododendron Graffito INKARHO
Rhododendron Graffito INKARHO
Available on the Inkarho rootstock! A really striking flower. White with a prominent wine red flare on the upper lobe in late May. This plant is particularly hardy with attractive dark green glossy leaves. Height 150cm in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Tough with dinstinctive flower and great foliage. Easy to grow. Ideal position:...
from £26.95

Rhododendron Madame Masson AGM INKARHORhododendron Madame Masson AGM INKARHO
AGM
Rhododendron Madame Masson AGM INKARHO
Now available on the Inkarho rootstock! White star-like flowers with a prominent golden yellow blotch, flowering in late May and early June. This is a very old hybrid that is extremely tough, reliable and striking. A dense well shaped plant with shiny dark foliage which is ideal for hedging and screening. Height 150-180cm in 10 years.Plant with plenty of good ericaceous compost to aid establishment. Recommended...
£26.95
Rhododendron Marcel Menard AGM INKARHORhododendron Marcel Menard AGM INKARHO
AGM
Rhododendron Marcel Menard AGM INKARHO
Now available on the Inkarho rootstock! Deep purple violet flowers, with prominent greenish speckling in the throat. Flowering late May to early June this is an old but particularly tough variety with clean dark green foliage. Height 140-160 cm in 10 years. Also known as Monsieur Marcel Menard. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Striking flower...
from £26.95

Rhododendron Nova Zembla INKARHO
Rhododendron Nova Zembla INKARHO
Now available on the Inkarho rootstock! Wonderful dark red flowers with darker spotting during late May to early June. These can fade to deep pink in strong sun, so best planted in dappled shade to preserve the colour. Great dark green foliage on a sturdy upright plant. Good for hedging and screening. It is also heat and sun tolerant, and very hardy. Height 150-175cm in 10 years.Plant with plenty of...
from £26.95
Rhododendron Old Port INKARHO
Rhododendron Old Port INKARHO
Now available on the Inkarho rootstock! Extremely attractive medium reddish purple flowers with a deep blotch flowering in late May. This is a vigorous old hybrid with good glossy leaves. Height typically 150cm tall by 180cm wide in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Recommended for: Striking flower and great foliage. Easy to grow. Ideal position: Most...
£249.00

Rhododendron Orakel INKARHO
Rhododendron Orakel INKARHO
(H7) NEW! Now available on the Inkarho rootstock! Striking dark purple variety with distinctive blackberry blotch. A tough variety from Hachmann in Northern Germany, flowering in late May-early June with good winter hardiness. Height 150-175cm in 10 years. Shortlisted for RHS Chelsea Flower Show Plant of the Year, 2016. One of 3 plants entered by Millais Nurseries that reached the top 20 selections...
£26.95
Rhododendron Roseum Elegans INKARHO
Rhododendron Roseum Elegans INKARHO
Now available on the Inkarho rootstock! Beautiful lavender flowers fading to pink, with reddish brown spotting. Flowering in late May early June this lovely old hybrid has olive green foliage. It tolerates sun, heat and cold and is a dense and vigorous grower. It is ideal for windbreaks or hedging and screening. Height 180cm in 10 years. Plant with plenty of good ericaceous compost to aid establishment. Recommended...
from £325.00

Rhododendron Sun Fire INKARHO
Rhododendron Sun Fire INKARHO
NEW and what a beauty! Red in bud, opening to orange flowers with yellow centres and stamen. Flowering in mid May with a glowing flame-like appearance this is a tough and floriferous plant with a compact habit. Height 150cm in 10 years. This plant offers a special colour arrangement. The inside of the flower is soft yellow and the outer edge pink-orange. The three upper lobes display interesting deeper...
£26.95
Rhodoendron Happydendron Pushy Purple INKARHO
Rhodoendron Happydendron Pushy Purple INKARHO
(H5) Deep reddish purple in bud, opening to pale pink flowers with a prominent green yellow blotch and a deep mauvey pink edging to the flower. Late May. An excellent and exclusive new variety bred by Holger Hachmann in Germany. Height 125-150cm in 10 years. Shortlisted for the RHS Chelsea Flower Show Plant of the Year 2019
£36.95