Hardy in most places throughout the UK even in severe winters -15° to -10°
Sunlight : Full SunMoisture : Well-drainedSoil : Acid / Neutral / AlkalineSeason of interest : Spring - Summer - Autumn
G. renardii is a clump-forming herbaceous perennial to 30cm, with handsome grey-green, lobed and finely wrinkled basal leaves. White or pale mauve flowers 3cm in width have prominent violet veins.
2020 – A few flowers in February (mild weather). Quite nicely flowered in April-May. Fairly good foliage afterwards.
2019- A few flowers at the end of February (very mild weather). Cleaned the clumps at the beginning of March. Put a splinter of rhizome in a bucket. End of March: 4 nicely flowered plants, 2 not yet. All in bloom at the end of April. All wilted at the end of May. Good foliage development afterwards.
2018- A few flowers in January (mild weather). New flowering and beautiful foliage in mid-April. Flowering in May and again at the end of June. Foliage a little tired, watered at the end of July.
2017 – Planted 6 specimens in the northern border to replace the frost damaged gauras this winter. Pozzolana & sand in planting holes, pozzolana mulch. No more flowers at the end of May! New flowers in June. Episodic flowering afterwards. Foliage takes on its autumn colours in September. Good development this season.