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H1a, higher than 15 °C (59 °F), applies to tropical plants permanently under glass in heat; while H7, below −20 °C (−4 °F), applies to very cold-tolerant plants such as heathers. Most outdoor plants in the UK fall within the range H4, −10 to −5 °C (14 to 23 °F) (hardy in the average winter) to H5, −15 to −10 °C (5 to 14 °F ...
In Southern California, the temperature differences are approximately 4 °F in winter and 23 °F (2 °C and 13 °C) in summer. At the coast in Santa Monica , the average high in August is 75 °F (24 °C), while in Burbank , approximately 10 miles (16 km) inland, the average high in August is 95 °F (35 °C): a temperature gain of about two ...
It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
The temperature map shows that in California, especially in northern parts of the state, there will be a 33% to 50% probability that temperatures will be above average.
The California Floristic Province is a world biodiversity hotspot as defined by Conservation International, due to an unusually high concentration of endemic plants: approximately 8,000 plant species in the geographic region, and over 3,400 taxa limited to the CFP proper, as well as having lost over 70% of its primary vegetation. A biodiversity ...
For its 2024 summer outlook, the almanac states that California will see hot and dry conditions. The almanac forecasts that it will likely be “warm, hot, and muggy” for most of the country.
By July, he expects the state to find itself in “a really active fire season.” Hot temperatures in spring and early summer dried out the grasses and brush brought on by two years of heavy rain ...
An aridity index (AI) is a numerical indicator of the degree of dryness of the climate at a given location. The American Meteorological Society defined it in meteorology and climatology, as "the degree to which a climate lacks effective, life-promoting moisture".