Fru Dagmar Hastrup Rose Rosa 'Fru Dagmar Hastrup' (Ru)

Water

For the Rugosa Rose, it is important to ensure that the soil is kept evenly moist, especially during the first growing season to establish a deep root system. Watering should be done deeply once a week, providing about 1 to 1.5 gallons for young plants, and up to 2 gallons for established shrubs, more if the weather is particularly hot or dry. Avoid overhead watering to minimize the risk of leaf diseases. During winter or in cooler climates, reduce watering, but do not let the soil completely dry out.

Light

Rugosa Roses thrive best in full sunlight, receiving at least 6 to 8 hours of direct sun per day. They can tolerate some light shade, particularly in the afternoon, but the best blooming and disease resistance occur in full sun. Plant them in a spot that is free from the shade cast by buildings or taller plants to ensure they receive ample sunlight throughout the day.

Temperature

Rugosa Roses are hardy plants that can withstand cold temperatures and are suitable for growing in areas where winter temperatures do not typically drop below -20°F. They can survive quite a range of temperatures but generally prefer the milder range of 60°F to 75°F. The Rugosa Rose is well-suited for cooler climates and can adapt to various temperature conditions, but prolonged exposure to temperatures above 90°F may stress the plant.

Pruning

Prune Rugosa Roses in late winter or early spring, removing dead or diseased wood and thinning out crowded areas to improve air circulation. Prune sparingly, as this plant can be sensitive to over-pruning; limit cuts to shaping the plant and removing old wood to encourage new growth. The best time for pruning is after the threat of the coldest winter weather has passed but before the plant has started its spring growth spurt.

Cleaning

As needed

Soil

Rugosa Rose prefers well-drained loamy soil with a pH of 5.6 to 6.5. Amend soil with compost or aged manure for best growth. Mulching helps maintain moisture.

Repotting

Rugosa Rose, being a hardy shrub, does not typically require repotting as it is usually planted directly in the garden soil.

Humidity & Misting

Rugosa Rose tolerates a wide range of humidity levels but thrives with average humidity, reflective of typical outdoor conditions.

Suitable locations

• Indoor

  Not ideal indoors; requires full sun, seasonal planting.

• Outdoor

  Plant in well-draining soil, full sun, water regularly.

• Hardiness zone

  3-8 USDA

Life cycle

The life cycle of Rosa 'Fru Dagmar Hastrup' (also known as Rugosa rose) starts with seed germination, where seeds require stratification—a period of cold treatment—to break dormancy. Upon germination, seedlings develop into young plants with characteristic pinnate leaves and thorny stems. As the rose matures, it enters a vegetative growth phase, focusing on leaf and stem development, and forming a bushy structure. The plant then progresses to its flowering stage, typically beginning in late spring and continuing through summer, with the possiblity of a second bloom in the fall. Throughout its life, the Rugosa rose will undergo annual cycles of growth, flowering, and dormancy, particularly in regions with cold winters. Once mature, the Rugosa rose can produce hips (seed-containing fruit) in autumn, which not only serve as a food source for wildlife but also enable propagation either by self-sowing or deliberate collection and sowing by gardeners.

Propogation

• Propogation time

  Early Spring

• Propogation: Rosa 'Fru Dagmar Hastrup', commonly known as shrub rose, is most popularly propagated through the process of hardwood cuttings. This is usually done during the dormant season, which in most temperate climates is late fall or winter. To propagate, one should select a healthy, mature stem from the current or past season's growth that is about the thickness of a pencil. The cutting should be about 8 to 12 inches (20 to 30 centimeters) long, with several nodes present. The base of the cutting is dipped in rooting hormone to encourage root development and then planted in a well-draining soil mix. The cutting should be placed deep enough that it stands upright and is firm in the soil, with only the top few buds above the surface. It is important to keep the cutting moist until roots have developed and new growth indicates successful propagation.