Like all plants, orchids need a healthy root system to survive and thrive. At least once a year, orchids enter a growth cycle when they generate new roots. These new roots are light green at the tips, and turn white with time. As they age over several months, they may turn brown. Since orchids are […]
Moth orchids, or Phalaenopsis, love warm temperatures. But one trick used by orchid experts is to give Phals a few weeks of cool nights in the fall. This can trigger the Phals to start growing a flower spike within a month. Normally their nighttime minimum temperatures should be about 65 F (18 C.) By giving […]
Think small for these Maxillaria uncata flowers, which are only 1/2 inch (1.2 cm) long. With reddish-purple stripes, yellow petals, and a white flower lip, these little tropical beauties appear translucent. This Maxillaria species is widespread from Mexico south to Brazil and Peru, where it survives in a wide variety of conditions. It’s a tough […]
Say “sah-LODGE-en-ee.” Kind of rhymes with “progeny.” It may have a tough name, but these fragrant white and yellow flowers make up for it. This Coelogyne mooreana originates in the cloud forests of the mountains of Vietnam, and can handle a wide range of temperatures. Mine lives outside all year long here in San Francisco, […]
If an orchid refuses to bloom over the course of a year, one of the most common culprits is insufficient light. Here are a few tips to keep in mind: • Light green or medium green leaves are a good indication that an orchid is receiving sufficient light. Dark green leaves may look attractive, but […]
One of the most common questions I receive about orchids is how to force them to re-bloom ahead of their natural schedules. There is only one method I know to accomplish this, and it only works with Phalaenopsis. As soon as the last flower fades, cut the flower spike (the stem that holds the flowers) […]
In the early 90’s I received this Phalaenopsis orchid as a gift from a friend, and it’s been a reliable bloomer ever since. It usually starts to bloom in the spring, and continues through the fall. The large flowers can last for months. Each flower is about 5 inches (12.7 cm) wide. The photo below […]
To welcome the longest day of the year (in the Northern Hemisphere, that is,) I have some cheery pink Epidendrum flowers. Happy summer! Here in San Francisco, it’s a hot one, 94 F (34 C) in the shade at 1:00 in the afternoon. Where’s that cool SF fog when I need it? This Epidendrum lives […]
There are a few of days of spring left, so it’s still repotting season. It’s best to repot orchids in the spring, and I have lots of orchids, so I always seem to be trying to catch up with this gardening chore. Doing this in spring, just as most are starting a cycle of growth, […]
Today’s orchid related vocabulary word is lithophyte. Pronounced “LITH-ah-fayht,” it rhymes with “lip-oh-fight.” A lithophythe is a plant that grows attached to rock. Sound like science fiction? Well, just as orchid roots can attach to tree trunks and branches, some can also attach to rocks. Lithophytes may sink their roots into crevices and absorb nutrients […]
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