Lysimachia clethroides Archives

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On: July 30, 2023

How to grow Lysimachia clethroides

Lysimachia clethroides, commonly known as Gooseneck Loosestrife, is a beautiful herbaceous perennial that produces arching spikes of white, gooseneck-shaped flowers. Here’s how to grow and care for Lysimachia clethroides:

RHS Hardiness Ratings	USDA Plant Hardiness Zones	Approximate Temperature Range (°C)
H1a H1b H1c	13 12 11	>15°C 10 to 15°C 5 to 10°C
H2	10b	1 to 5°C
H3	9b to 10a	-5 to 1°C
H4	8b to 9a	-10 to -5°C
H5	7b to 8a	-15 to -10°C
H6	6b and 7a	-20 to -15°C
H7	6a	Below -20°C

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