NAZARENA
TerminatedRhododendron L. · Azalea
WILLY STRECK
Cultivation
Rhododendron L.
Growing rhododendrons in containers requires the use of compact varieties based on Rhododendron simsii and Rhododendron obtusum, strict control of substrate acidity (pH 3.5–5.0), and specific temperature regimes for flowering.
In the reference 21 varieties crop Azalea, where this is mentioned in the description.
For potted cultivation of rhododendrons, compact hybrids with limited growth up to 30–50 cm are selected. Given the shallow root system, the plants are grown in wide containers using a specialized acidic substrate based on sphagnum peat with the addition of pine needles, sawdust, or sand.
The technology involves regular pruning after flowering to maintain shape and annual removal of the plant to treat the root ball to prevent compaction. The crop has increased temperature requirements: cool conditions within +12...+15 °C are necessary for bud formation, and a dormancy period at around 0 °C during winter.
In the limited volume of a pot, the plant requires more intensive and frequent fertilization than in open ground. Due to high sensitivity to water-air balance, the stability of soil acidity and the quality of irrigation are critical factors for maintaining the vitality of the bush.
General information about the subject — on the page Pot culture.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.