Malva Rosa (Malva Assurgentiflora) Is An Evergreen Mallow endemic to Southern California. Often called "Island Mallow," since it is native only to the Channel Islands, but it can be found in coastal mainland California as well as Guatemala, western South America, New Zealand and Australia. It produces a pink-lavender showy flower very similar to hibiscus from spring into summer. Malva Rosa grows naturally as a sprawling hedge, but can also be trained as a small tree. It prefers well-drained soil and full to partial sun; it also grows extremely fast and can reach 10' tall and 10' wide. Its conservation status is listed as "at risk," but it can be seen blooming in parts of coastal San Diego right now.

Summer Solstice, The Time When The Sun Reaches Its Northernmost Point in the sky, occurs this year at 7:41 am on Friday, June 20. The summer solstice not only marks the beginning of summer for the Northern Hemisphere; it also means that the daylight hours are maximized. San Diegans now enjoy approximately 14 hours of daylight each day, in contrast to the meager 10 hours or so we experience in December. Anytime this week or next, try checking your shadow at 12:50 pm (the local daylight time in San Diego that is currently equivalent to astronomical noon). The sun will be only 10 degrees south of straight overhead, and so objects will cast shadows nearly straight down. A lesser known consequence of the summer solstice is that our twilight periods are longer than usual. Evening and morning twilight periods are now lasting more than 90 minutes.

Ocean Water Temperatures Are Rising into the mid-60s this month, perhaps to reach the low 70s in August. The usual early-summer cool weather along San Diego's coastline, disappointing to many tourists, is mostly caused by the sluggish warming of the ocean water. The payoff will come later: as the ocean gives up heat absorbed during the sunny summer months, we'll enjoy warm days and evenings well into autumn.
Mercury Will Be At It's Brightest magnitude in 2025 now through June 30. Look low in the Northwestern sky at around 9pm.
Malva Rosa (Malva Assurgentiflora) Is An Evergreen Mallow endemic to Southern California. Often called "Island Mallow," since it is native only to the Channel Islands, but it can be found in coastal mainland California as well as Guatemala, western South America, New Zealand and Australia. It produces a pink-lavender showy flower very similar to hibiscus from spring into summer. Malva Rosa grows naturally as a sprawling hedge, but can also be trained as a small tree. It prefers well-drained soil and full to partial sun; it also grows extremely fast and can reach 10' tall and 10' wide. Its conservation status is listed as "at risk," but it can be seen blooming in parts of coastal San Diego right now.

Summer Solstice, The Time When The Sun Reaches Its Northernmost Point in the sky, occurs this year at 7:41 am on Friday, June 20. The summer solstice not only marks the beginning of summer for the Northern Hemisphere; it also means that the daylight hours are maximized. San Diegans now enjoy approximately 14 hours of daylight each day, in contrast to the meager 10 hours or so we experience in December. Anytime this week or next, try checking your shadow at 12:50 pm (the local daylight time in San Diego that is currently equivalent to astronomical noon). The sun will be only 10 degrees south of straight overhead, and so objects will cast shadows nearly straight down. A lesser known consequence of the summer solstice is that our twilight periods are longer than usual. Evening and morning twilight periods are now lasting more than 90 minutes.

Ocean Water Temperatures Are Rising into the mid-60s this month, perhaps to reach the low 70s in August. The usual early-summer cool weather along San Diego's coastline, disappointing to many tourists, is mostly caused by the sluggish warming of the ocean water. The payoff will come later: as the ocean gives up heat absorbed during the sunny summer months, we'll enjoy warm days and evenings well into autumn.
Mercury Will Be At It's Brightest magnitude in 2025 now through June 30. Look low in the Northwestern sky at around 9pm.
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