This is a tricky month. The average high temperature is 59 degrees, and the average low is 32 degrees. The record high is 85 degrees and record low 9 degrees. The average humidity is 38%. The winds are picking up, and we can get very strong gusts. Winds have been clocked at 60 MPH. Keep [...]

The last month of the calendar winter. The weather is similar to January. The nights will still be below freezing. Toward the end of the month, there are some warm, balmy, spring days. Close the cold frame or the trees get too warm and start budding. The average high for the month is 52 degrees; [...]

This is our middle of winter, and it can get cold. The average high temperature is 46 degrees; the average low is 23 degrees. Records are 69 degrees for the high and -17 degrees for the low. Relative humidity is 53%. On warmer days of 40 degrees or above, the cold frame can be opened [...]

This is winter now. Even though some days are fairly warm, keep the cold frame closed. Open it if there is a “warm” snow during the day, but close by nightfall. The average high temperature is 47 degrees; the average low is 24 degrees. The record high is 72 degrees; 3 degrees is the record [...]

The nighttime temperatures are going below the freezing point now. The average high temperature is 57 degrees; the average low is 31 degrees. The record high is 77 degrees; the record low is -7 degrees. Trees should be dormant now and in their winter protection. You may open the cold frame on warmer days and [...]

Nights may be too cool now for semi-tropicals. Move deciduous trees to a shadier location to prevent new growth. Watch the weather reports more carefully now. It is common to have an early frost. The average high is 71 degrees; the average low is 44 degrees. The record high is 87 degrees; record low is [...]

Days are getting cooler but there are still hot days an it is still very dry (except during the state fair downpours!). The average high is 83 degrees; the average low is 56 degrees. The record high is 98 degrees; the record low is 32 degrees. If freezing weather is forecast, put the trees in [...]

There are usually thunderstorms during the first part of the month. They usually stop abruptly, and the end of the month can be the driest part of the year. The average high is 89 degrees; the average low is 63 degrees. The record high is 101 degrees; the record low is 52 degrees. The average [...]

The weather is still hot, but there is more rain. Average high is 92.2 degrees; average low is 65.2 degrees. The record high is 104 degrees; record low is 54 degrees. Relative humidity is 43%. Rains can come down in torrents. The sun filter overhead has another use, protecting the bonsai from having soil washed [...]

This month is traditionally hot and dry. Average high is 89.5 degrees; average low is 59.7 degrees. The record high is 105 degrees; the record low is 42 degrees. The humidity averages 29%, getting down to around 10% by afternoon on a windy day. It is important now that the trees are in filtered sun. [...]