Why is my orchid leaf turning black?
Black leaves can indicate a bacterial or fungal growth or too much fertilizing or mineral deposits from hard water. Leaves may also turn black before falling off if an orchid has received too much light.
Why are my Zygopetalum leaves turning yellow?
Over-watering symptoms include lower yellowing of leaves, a rapidly declining stem, flower loss and a rotten base (pseudobulbs). These issues are commonly down to either too much soil moisture, an incorrect soil medium, too little light, or foliage that has allowed to remain wet for long periods.
What causes black rot?
Black rot of crucifers is caused by Xanthomonas campestris pv. campestris (Xcc). This bacterium is most often introduced into a garden on or in seeds and transplants of susceptible vegetables.
How do you treat a fungal infection on an orchid?
Using sterile clippers, remove infected leaves and dispose of them away from your plants. Spray infected plants with Captan Fungicide, Thiophanate Methyl or Mancozeb according to the manufacturer’s instruction. Be sure when spraying that the fungicide reaches into the leaf crevices to kill fungal spores.
How do you Rebloom Zygopetalum?
Grouping plants also helps to maintain the moisture in the air around them. Temperature: Give your Zygopetalum orchid slightly cooler nighttime temperatures (60-65°F/16-18°C) and warm (70-75°F/21-24°C) days to get the most blooms. Fertilizer: Feed every 2 weeks while plant is actively growing with an orchid fertilizer.
How often do Zygopetalum orchids bloom?
They generally bloom twice a year. However, some species can bloom up to four times a year! Their flowers last up to a month. It is indeed lovely to have a plant in full bloom in winter when most other plants have finished their blooming cycle.
How do you get Zygopetalum to bloom?
Temperature: Give your Zygopetalum orchid slightly cooler nighttime temperatures (60-65°F/16-18°C) and warm (70-75°F/21-24°C) days to get the most blooms. Fertilizer: Feed every 2 weeks while plant is actively growing with an orchid fertilizer. Add fertilizer to the water at every second or third watering.
What is the best temperature for Zygopetalum orchids?
Zygopetalum orchids grow well in moderate temperatures. The optimal day temperature is between 70F and 75F, and it should be about 10F lower during the night. However, you should always check what particular species you have. Those that grow at higher altitudes, such as Zygopetalum Maculatum and Zygopetalum Intermedium, prefer cooler temperatures.
Why does my Zygopetalum have black spots on the leaves?
If black spots appear on the leaves of your Zygopetalum, this is an indication that you need more air circulation. An easy way to increase the air movement for your plant is by putting an oscillating fan nearby your orchid.
What does a Zygopetalum orchid look like?
Zygopetalums are very fragrant orchids and their fragrance can often fill an entire room. Zygopetalum orchids produce beautiful waxy-looking blooms. The blooms are usually green and brown striped or speckled, with a broad white velvety lip marked with purple, indigo, maroon, or fuchsia.
Why are my orchideria leaves turning black?
Black Rot and How to Treat It – Orchideria Black Leaves on your Orchid? Black spots that start small but soon take over an entire leaf are common orchid problems called Black Rot. If not controlled soon, Black Rot will travel form the leaf down toward the crown, killing the pseudobulb, rhizome, and roots.