Plants by mail order since 1984, over 4100 plants online today!
emailWould you like to receive Burncoose newsletters?
Keep up to date on offers, events and news from us and the rest of the Caerhays Estate.
RHODODENDRON 'May Day'
Evergreen - large leaves 15-45cm (6-18in) long.
Red - scarlet
Height - 1.5m (5ft)
Spread - 1.5m (5ft)
Medium shrub - Typically grow to around 4-6 feet in height - low growing, spreading habit. Produces loose trusses of funnel-shaped flowers 7cm (3½in) long
Half hardy - unheated greenhouse / mild winter - Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
Full sun - shelter from strong winds
Partial shade - maintains colour better in light shade.
Additional Features - Burncoose speciality - See Burncoose Speciality group for more details
Pests & Diseases - vine weevils, scale insects, honey fungus, powdery mildew, bud blast.
Place of origin - garden origin. UK. 1932. AM Williams, Werrington, Cornwall
Burncoose specialities - Caerhays bred plants
Hardiness - Frost hardy (down to -5) -
Soil Conditions - Fertile moist well-drained soil - humus-rich.
Neutral to acid soil - ideally pH4.5 - 5.5
Cold weather damage to evergreen plants
Rhododendron - Care Guide
- Dead Heading
- Dead Heading - Video Tip ondemand_video
- Pruning - Video Tip ondemand_video
- Weed Killing
- Pests and Diseases
- Honey Fungus - Video Tip ondemand_video
- Further Reading
- Rhododendron genestrianum - Video Tip ondemand_video
- Scented Rhododendrons - Video Tip ondemand_video
Rhododendron - Propagation
- Growing from seed
- Growing from cuttings
- Propagation by layering - Video Tip ondemand_video
- Propagation by other means
- Making a hybrid - Video Tip ondemand_video
- Making a hairy or scaly cross - Video Tip ondemand_video
- Caerhays bred 'Red Centurian'
Shrubs and Trees - Seeds - 1) Collecting Seeds
Shrubs and Trees - Seeds - 2) Storing Seeds
Shrubs and Trees - Seeds - 3) Planting Seeds
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries. It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Fertilisers & Feeds - Empathy
Ericaceous Liquid Seaweed Fertiliser
Specially developed organic concentrated seaweed feed for ericaceous plants that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, Perfect used in conjunction with Rootgrow™ Ericoid.
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen. Just stick them in your pot or border. Pack of 6.
Slate Tie-on Plant Labels
Hand made in Cornwall, these delightful natural slate labels are perfect for pots. Comes with chalk pen. Pack of 5