Azalea 'SPEK'S ORANGE' deciduous azalea

Spek’s Orange is a large-flowered deciduous azalea introduced in 1958. From early May, it blooms with single flowers up to 6 cm wide in an attractive shade blending subtle, pastel orange and salmon pink, with a golden glow in the throat. It carries a moderately strong, sweet, and very pleasant fragrance. It grows upright into a well-branched shrub, reaching about two meters in full maturity and slightly less in width. The leaves are fresh green, deciduous, oval, pointed, and in autumn they turn red, orange, and yellow.

Deciduous azaleas are heathland plants that, unlike Japanese azaleas, thrive in full sun as long as they are provided with consistently moist, acidic soil. They tolerate occasional drying in summer, but their leaves will be weaker and more susceptible to fungal diseases. If spots appear on the leaves, or the foliage begins to curl unnaturally or lose colour, apply a suitable fungicide immediately. Usually, one or two treatments are sufficient to keep the plant beautiful and healthy until leaf drop. During flowering, also check the emerging leaves, as they are often eaten by slender caterpillars that are almost invisible due to their identical green colouration.

Azaleas are not commonly pruned. If you need to shape or rejuvenate the shrub, do so as early in spring as possible to allow new shoots to develop, with flower buds forming at their tips for the following year. They regrow reliably. They have a dense network of shallow roots through which they absorb moisture and nutrients. When planting, provide them with light, well-draining soil enriched with peat, lime-free compost, and leaf mold. They are fully hardy down to about -34°C (USDA zone 4).

Last update 08-05-2025