AFRICAN

ORCHIDS

Read more of cultivation of Gastrorchis pulchra Humbert & H.Perrier
Culture
Light:
1200-1800 fc. Diffused light is preferred.
Temperatures:
Summer days average 70-75F (21-24C), and nights average 56-63F (13-17C), with a diurnal range of 11-14F (6-8C).
Humidity:
80% throughout the year.
Water:
Ample moisture is needed in periods of active growth. The rainfall pattern is wet/drier, but humidity levels in the habitat indicate that fog and dew provide some moisture in the dry period.
Fertilizer:
1/2 strength, applied weekly when plants are actively growing.
Rest period:
Winter days average 65-70F (18-21C), and for 5 months nights average 52-56F (11-13C). Highs and lows decline simultaneously, maintaining a uniform diurnal range. The rainfall pattern indicates that water should be reduced in winter with a 1-2 month dry period occurring in early spring. Fertilizer may be reduced or eliminated, and light increased for 2-3 months.
Growing media:
A fertile terrestrial mix with high humus and good drainage.
References:
This information is quoted from a Charles and Margaret Baker culture sheet, with permission from Troy Meyers This email address is being protected from spambots. You need JavaScript enabled to view it.. The entire culture sheet can be obtained by subscription from Orchid Species Culture, http://orchidculture.com











Read more of cultivation of Gastrorchis lutea (Ursch & Toill.-Gen. ex Bosser) Senghas
Culture
Light:
2400 fc. Light should be diffused or barely dappled. Direct sunlight should be avoided.
Temperatures:
Summer days average 74-76F (24-25C), and nights average 58-62F (15-17C). These average temperatures indicate a probable intolerance to hot summers. The diurnal range of 14-16F (8-9C) fluctuates only 3F (2C) throughout the year and is slightly lower in summer when rainfall is highest.
Humidity:
80-85%.
Water:
Ample moisture is needed in the active growing season. The medium should be moist year-round. The rainfall pattern is wet/wetter.
Fertilizer:
1/2 strength, applied weekly when plants are actively growing.
Rest period:
Winter days average 66-70F (18-21C), and nights average 50-55F (10-13C), with the diurnal range of 14-17F (8-9C). Plants require less frequent watering during the cooler winter, but the habitat is always moist and humidity hight. Fertilizer should be reduced unless active growth is evident.
Growing media:
A fertile terrestrial mix with good drainage. Repotting is best done as plants break dormancy or immediately after flowering.
References:
This information is quoted from a Charles and Margaret Baker culture sheet, with permission from Troy Meyers This email address is being protected from spambots. You need JavaScript enabled to view it.. The entire culture sheet can be obtained by subscription from Orchid Species Culture, http://orchidculture.com












Read more of Cultivation of Gastrorchis francoisii Schltr.
Culture:
Light:
Gastrorchis francoisii needs a light level of 18000-24000 lux.
Temperature:
The average temperature of the summer day is 25-26 ° C, night 13-15 ° C, giving a daily difference of 10-13 ° C. The average temperature of the winter day is 20-23 ° C, the night 8-11 ° C, giving a daily difference of 12-14 ° C.
Humidity:
Gastrorchis francoisii needs the average humidity of 65-75%.
Substrate, growing media and repotting:
It is recommended to use a fertile mix for substrate with good drainage. You can use a mixture of 2 parts peat and 1 part mulch, sand and charcoal. Repotting is best done in early spring, when new increments begin to appear.
Watering:
In the period of active growth, extensive watering is recommended. The substrate should be constantly moist, but not soaked. The precipitation pattern is wet / dry, but the humidity remains at a relatively high level.
Fertilizer:
During the growing season plants should be fertilized every week with 1/2 of the recommended dose of fertilizer for orchids.
Rest period:
In winter, after dropping the leaves, the amount of water should be reduced to occasional fogging, and fertilization should eliminated.
References:
This information is quoted from a Charles and Margaret Baker culture sheet, with permission from Troy Meyers This email address is being protected from spambots. You need JavaScript enabled to view it.. The entire culture sheet can be obtained by subscription from Orchid Species Culture, http://orchidculture.com











Read more of cultivation of Gastrorchis humblotii (Rchb.f.) Schltr.
Culture:
Light:
Gastrorchis humblotii needs a light level of 15000-25000 lux. The light should be diffused and direct sunlight should be avoided.
Temperature:
It is a thermophilic plant. The average temperature of the summer day is 24-25 ° C, the night 15-17 ° C, giving a daily difference of 7-8 ° C. The average temperature of the winter day is 22 ° C, the night 13-15 ° C, giving a daily difference of 6-8 ° C.
Humidity:
Gastrorchis humblotii needs the humidity of 70-80% during wet summer season.
Substrate, growing media and repotting:
You can use a fertile mix for substrate with good drainage. Repotting is best done in spring, when the plant takes active growth.
Watering:
During the active growth, a large amount of water is required. The substrate should be moist, but not soaked. The rainfall pattern in the year is: wet / dry.
Fertilizer:
During the growing season plants should be fertilized every week with 1/2 of the recommended dose of fertilizer for orchids.
Rest period:
The resting period initiates flowering of Gastrorchis humblotii. These plants are able to withstand a temperature drop in the winter to 4 ° C, if they are dry. The level of light can be larger; fertilization should be reduced. The growing conditions should also be more dry, and watering reduced to occasional fogging.
References:
This information is quoted from a Charles and Margaret Baker culture sheet, with permission from Troy Meyers This email address is being protected from spambots. You need JavaScript enabled to view it.. The entire culture sheet can be obtained by subscription from Orchid Species Culture, http://orchidculture.com












Read more of Cultural information of Gastrorchis lutea var. geffrayi (Bosser) J.V.Stone & P.J.Cribb
Light:
1200—2000 fc. Diffused or barely dappled light is recommended. Direct sunlight should be avoided.
Temperatures:
Summer days average 75—79°F (24- 27°C), and nights average 63—64°F (17—18°C). The average temperatures vary only 6°F (3°C) between summer and winter, and the diurnal range of 11—15°F (6—8°C) fluctuates only 4°F (2°C).
Humidity:
70-80%.
Water:
Ample moisture is needed during periods of active growth. The rainfall pattern is wet/dry, but the moisture in the plant’s microclimate is probably greater than the rainfall amounts recorded at the lower-elevation weather station.
Fertilizer:
½ strength, applied weekly when plants are actively growing.
Rest period:
Winter days average 73—75°F (23—24°C), and nights average 58—60°F (15—16°C). The probable extreme low is just 6°F (3°C) below the average winter low. In cultivation, water should be decreased to occasional misting for 4—6 months, and fertilizer eliminated when the plants are dormant. In the habitat, winter light is high and chear days are common, but whether this is important in cultivation is not known.
Growing media:
A fertile terrestrial mix with good drainage. Repotting is best done in early spring as plants resume growth.