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Great yellow
Rumex longifolius
Information on Rumex longifolius - Growth Characteristics: - Rumex longifolius is a perennial herbaceous plant that grows to a height of approximately 60–120 cm. - It has long, oval-shaped leaves that reach a length of 15–30 cm. - It blooms with yellowish-green flowers in the summer (June–July), arranged in a spike inflorescence. - Propagation Methods: - Propagation is primarily done by seeds; mature seeds are collected in late autumn and sown the following spring. - Vegetative propagation by cutting roots is also possible. - Cultivation Methods: - It thrives in locations with plenty of sunlight, and well-drained soil is suitable. - Before planting, thoroughly prepare the soil and mix in organic matter. - Water periodically to prevent the soil from drying out, but avoid excessive watering. 4. Use in Gardens: - Due to Rhubarb's large leaves and tall growth characteristics, it is suitable as a background plant. - It is used as an ornamental plant and is primarily planted along walls or the edges of flower beds. - Major Pests and Diseases and Control Methods: - Aphids or spider mites may occur; they inhibit growth by sucking the plant's sap. To control them, spray the leaf surface with soapy water or emulsified oils. - To prevent root rot, pay attention to drainage, and if infected, remove the affected parts. - Even if there are no specific pests or diseases, periodic observation and control are necessary. Since this information is not based on verified sources, it is recommended to follow expert advice when cultivating the plant.
Plant Type
Plant Family
Polygonaceae
Height
80~120cm
Spread
Colors
brown, red, green
Bloom Period
May to July
Water Needs
commonly
Exposure
Sunny
Freezing Resistance
-30°C
Goldenrod
Rumex maritimus
True Sound
Rumex japonicus