Plants that make up the Solidago genus are hardy perennials that range in height from 60 cm to 2.4 m.
They bloom in summer through to early august and carry spikes of minute yellow flowers.
One of the most common names for Solidago is Golden Rod.
Solidago rugosa - Fireworks Goldenrod by F. D. Richards.
When growing Solidago plant species such as Golden Rod outdoors from seed then either sow before the last frost of spring or towards the end of autumn. Once sown, lightly cover the golden rod seeds. They can be grown in either sunny or partially shaded parts of the garden that have good drainage. Ideally the soil that plants grows in will be acidic to neutral (pH 5 to 7) and moist.
If starting off golden rod plants indoors then do so about seven weeks in advance. The seeds will take about two to eight weeks to germinate at a temperature of 10 degrees centigrade. The plants should be put outdoors in either late autumn or just before the last frost of spring. Solidago plants should be spaced at 30 cm (small Solidago varieties) or 60 cm to 1 m (larger species).
It is fairly easy to care for Solidago. They are tall plants so provide a stake; water frequently to keep soil moist; deadhead flowers before they have a chance to set seed; cut back to the ground in autumn; divide the plants every three years or so to maintain vigorous growth. If you require more plants and do not want to grow from seed then they can be propagated by division in the spring.
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