Rhododendron pink seeds «Flore Roseum»

Rhododendron (azalea) pink «Flore Roseum» / Rhododendron Flore Roseum - this is a deciduous shrub with a cushion-shaped, broadly spreading crown. In youth, plants look dense and compact, but over time the crown becomes more asymmetrical. Shoots are thin, strong, highly branched, and grey-brown in color. Leaves are small, up to 6 cm long, elongated-lanceolate, slightly pubescent, green. Young leaves appear at the same time as the buds open, creating a harmonious combination of foliage and flowers.

Flowers are large, up to 8 cm in diameter, funnel-shaped, lily-like, pink with a lilac shade. A bright orange pattern is visible on the upper petal, giving the flower special expressiveness. Buds are pink and gathered in spherical inflorescences of 8–10 flowers. Flowering is fragrant and fills the garden in May.

The shrub reaches 1.0–1.5 m in height and width. Flowering occurs in May and lasts quite a long time, decorating the garden with bright spring colors.

For cultivation, semi-shaded locations or light sun protected from wind are best. In full sun, flowers fade quickly, so proper placement is important. The soil should be fresh, fertile, well-drained, and acidic (pH 4.5–5). Regular watering is necessary, but overwatering must be avoided. Fertilizers for rhododendrons have a positive effect.

In winter, the root zone is covered with sawdust and protected with agrofibre. Covering is done before frost and removed in spring when the soil has fully thawed. Pruning can be done immediately after flowering, before new flower buds are formed. Spent flowers are not cut but carefully removed by hand to avoid damaging young shoots.

In landscape design, this rhododendron looks great in both single and group plantings with conifers and deciduous plants. It is used in rock gardens, alpine gardens, stone gardens, under large trees where grass does not grow. It is also suitable for container growing on terraces in sheltered, shaded locations. Due to its decorative value, the shrub is ideal for creating mass plantings and bright garden accents.

Propagation of rhododendrons by seeds

Substrate composition. The optimal soil acidity at which rhododendrons develop well is within pH 4.0–5.5, although soil with pH 5.8 can also be used. Factors that determine the success of seed propagation in specific introduction conditions include the choice of sowing substrate, moisture regime, temperature, lighting, and seedling care. The substrate for sowing can vary, but it must be loose, acidic, and air-permeable. Fine fibrous rhododendron roots are located in the upper humus layer. Peat is an essential component of soil mixtures for germinating seeds and growing rhododendron seedlings.

The best time for sowing rhododendron seeds in a greenhouse at a temperature of 18–24 °C is November–December. Early sowing is advantageous because it extends the growth period of seedlings, allowing them to develop better during the growing season.

Since rhododendron seeds are very small and require light for germination, they must be sown on the surface without being covered, scattered evenly, and the containers covered with glass. As soon as most seeds germinate, the glass covering is removed, and the containers are moved to a cooler place (15–17 °C), where the young seedlings harden, strengthen, and develop better.

Further care consists of maintaining optimal moisture levels. Overwatering leads to infection, which spreads quickly, and within a few days young seedlings may die. Watering is best done in the morning using a sprayer or a watering can with a fine rose, very carefully.