Vallejo, CA, (USDA Zone 9b/Sunset Zone 17) Advective freeze last night, with frost. Dew point hovered just below actual temperatures during the coldest hours. Humidity was considerably high for an event like this in Northern California. Generally during similar cold events humidity levels out in my area are consistently quite low. ~70% damage on horizontally exposed leaves. This is a juvenile 5 multiple clump planted last July 4th, 2020 so a pretty dense set of leaves packed into a small area, which coincidentally results in some leaves being exposed and damaged, and others protected and damage free. This clump is under wide open sky near a west facing wooden fence, less than 20 ft from the south facing wall of my house. Somewhat surprised this much damage occurred at those temps but it was advective with frost, on a plants that have been in the ground less than a year so ya...
Hi all. We have had one of the warmest winters on record but the cold is here this week in Cyprus with temperatures around 12C in the day an around 6C at night. However according to all the weather forecasts, tomorrow it will fall to 2 C only for a couple of nights then its going up again. I have tried repeatedly from forecasts to work out if the combination of information can predict frost as this info is not available but to no avail.Dew point is listed as -2C. Is that of any use. Can someone explain the info required and how to predict. Meanwhile, my small palms, will share my old quilts and blankets for those nights.
As many people know, South Florida has been much warmer than usual over the past few years (summers, winters). Lately there have been many record high lows and high daytime highs.
I have seen graphs showing a general warming trend in Miami over the past 100 years or so...it averages out to 2 or 3 degrees warmer than what it used to be in the early 1900s.
My question is, do you think this is just because of cyclic patterns of warm and cool periods coinciding with urbanization? Or is this a long term trend? I have read about frosts being somewhat frequent at Fairchild in the 70s and now they are very rare if any even occurr in a winter.
What are your experiences in South Florida regarding this warming?
I have noticed many bread fruit trees in my neighborhood, but I also know they grow fast so they probably haven't been around for too many years.
Please share your thoughts or experiences in the garden and weather world from South Florida, I would love to hear them.
This is from my Costco home weather station today.
Anyone else see temperatures like this?
I have a pair of Cycas thouarsii which I pollinated with pollen from some of my male Cycas thouarsii back in late 2018. I am curious how long it takes for the seeds to mature and if they should fall off the plant when they are "ripe". The photos below are just about 15 months apart with the early photos taken of the plants and seeds in November 2018 and the other shots current from February 2020. I know it is easy to determine when to harvest seeds from Encephalartos as the cones starts to fall apart. What is the best indication for Cycas thouarsii and any input on how long that takes? I assume there also could be a little variation in how long it takes based on climate (faster in habitat and slower in my cooler climate).