What Is a Zone 4 Plant

What is Zone 4? The USDA determines plant hardiness zones based on the average annual minimum winter temperature, or the coldest temperature of most winters. … Gardening in Zone 4 means dealing with cold winter weather—temperatures in Zone 4 drop to somewhere between -30 °F and -20 °F most winters.

What does it mean hardy to zone 4?

A plant listed. as hardy in Zone 4 indicates it should survive winter temperatures as low as 30. degrees below zero F, which is the average minimum winter temperature according. to the USDA map. A Zone 9 plant is hardy only to 20 degrees F.

What area is Zone 4 in London?

StationLocal authorityManaged byHounslow EastHounslowLondon UndergroundIlfordRedbridgeTfL RailIsleworthHounslowSouth Western RailwayKent HouseBromleySoutheastern