The characteristics of rudbeckia
- Type: Flower and flowering plant
- Height: From 0 to 30 cm, From 30 to 60 cm, From 60 to 80 cm, From 80 cm to 1 m, From 1 to 2 m
- Flower colors: yellow orange
- Desired exposure: sunny, semi-shaded
- Type of soil: clay, limestone, well drained
- Foliage : spent
- sanitizer: No
- variety: Rudbeckia amplexicaulis, Rudbeckia hirta, Rudbeckia laciniata, Rudbeckia speciosa, Rudbeckia maxima
Origins and peculiarities of rudbeckia
From the family of Asteraceae, the rudbeckia is a herbaceous plant native to North America. There are around thirty species of rudbeckia which are mainly cultivated in order to produce beautiful beds, to flower the flowerbeds or even to form bouquets of cut flowers.
Rudbeckia flowers, yellow with a dark brown or red center, look like large daisies, single or double. The yellow rudbeckia flower also has the power to attract butterflies that will beautify your garden!
In addition to the beauty of its flowers, rudbeckia has preventive and curative properties of colds and flu-like symptoms when its flowers, leaves and roots are consumed as an infusion. The plant also has healing properties, such as marigold.
Outside, the rudbeckia can find its place as well in a solid mass in the ground as in a planter or a pot on a terrace or a balcony. Once the large yellow flowers have been cut, they can last up to 30 days in a vase: ideal for brightening up a room inexpensively!
Plantation of rudbeckia
In general, rudbeckia is planted in spring or even in autumn, in order to obtain a flowering between the month of May and the month of September.
Regarding sowing: in order to obtain beautiful plants, it is necessary to sow the rudbeckias in a fairly sunny location (or so semi-shaded). Even if the plants are not too demanding with regard to the soil which receives them, to obtain as many flowers as possible, a fresh and well-drained soil will be optimal.
Multiplication of rudbeckia
To multiply perennial rudbeckias, the tuft is divided in the fall or early spring. This division is recommended every three to four years because it stimulates flowering in old plants.
Maintenance and watering of rudbeckia
Rudbeckia is a plant that needs freshness above all: in case of high heat and drought, do not hesitate to water them weekly, so that the soil always remains a little moist.
Mulching is also an excellent option so that the soil of your rudbeckias does not dry out too quickly and to space out watering.
Fairly autonomous, rudbeckia flowers still require a little maintenance:
- In addition to regular watering, you should not neglect the addition of a fertilizer for flowering plants every 3 years to improve flowering.
- It is also necessary to remove the wilted flowers as you go along and carry out a very severe pruning at the beginning of winter, in order to see the rudbeckias bloom again in the summer.
Enemies and diseases of rudbeckia
Rudbeckia is a very solid plant which resists viruses well; nevertheless, it can be reached by powdery mildew, a disease favored by exposure to full sun and watering of the foliage which will cause excess humidity.
Slugs and snails can also be found on young rudbeckia plants. To keep these unwanted people away, put a bowl of beer near the flowers. The snails will be held back by coffee grounds.