HARDINESS examples of the cold resistance of some plants in various locations and conditions

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PLANT	geo location	photo	annual maturity	protection/ other growing conditions	min tempe-rature in the last 5 years	reporter
Magnolia Grandiflora	Ven	from our garden	flower	house 5 m from east	-11 C
Tetrapanax 'Rex'	Skövde		recovers from roots		-20 C	Ludvig Johansson
Paulownia fortunei	Skövde		flowers		-20	Ludvig Johansson
Castanea sativa	Skövde		no flowering		- 30 C	Ludvig Johansson
fig	Ven	our garden	fruits	protected  from 3 sides	-11 C
oleander	Ven	died	2020/21	from one side	-11 C
Fatsia Japonica	Ven	died	2020/21	not protected, was flooded some period	-11 C
Arbutus indeo	Ven		fruit	one side, wooden fence, west	-11 C
Castanea sativa	Ven		fruit after introducing the second tree	not protected	-11 C
Paulownia Tomentosa	Ven	our garden	flower and fruits	not protected	-11 C
Paulownia Tomentosa	Malmö		flower, fruits	protected in a town squere
Paulownia Tomentosa	Uppsala			protected by houses in the courtyard		Ebba Sigfridsdotter
Ceanothus thyrsiflorus, evergreen	Ven	, our garden	suffered frost burns 2020/21	protected by a fence from one side	-11 C
Ceanothus x delileanus 'Gloire de Versailles'	Ven		the branches survive		-11C
Ceanothus x delileanus 'Gloire de Versailles'	Vienna/ Auatria		died to the ground		-20
Tetrapanax papyrifer 'Rex'	Ven		suffers	protected by a wrapping	-11C
Eriobotrya japonica	Ven	our garden	no flowers yet	protected	-11C
Gunnera manicata		died		was slightly  protected	-11C
various bamboo	ven		no problms
various bamboo	Vienna		some suffered		-20
I would like to know the practical hardiness of the following plants
hardy Scheflera