Growth requirements of Terrestrial Orchids

Culture Other Genera

by Anu Dharmani

Originally published in BellaOnline

Posted by Sys Admin over 4 years ago.

Article Blog   Article Index

Mostly erect plants, the terrestrial orchids are hardier plants than the epiphytic orchids and should be tried first by the beginners. Though, terrestrial are less popular than the epiphytic orchids, they have equally beautiful flowers. Terrestrials can be found growing in abundance in tropics as well as temperate regions, unlike the epiphytes which prefer the tropics more. These are even found growing above the Arctic Circle according to the Wikipedia. 

Terrestrials can be classified into two broad groups according to their growth habits: lithophytes or soil growing autotrophs and the saprophytes. Lithophytic orchids grow on rocky terrain; these orchids are also seen growing without any problem in the soil. These are sometimes seen growing as epiphytes also. The saprophytic orchids are much less popular as houseplants than any other orchid type. These can't produce their own food, as in nature saprophytes depend upon dead and decaying organic matter such as fallen dead leaves. Saprophytes are so called hidden plants, as they do not possess leafy shoots, but send out shoots which just bear the flowers in the growing season.

If the orchid that you have obtained is a terrestrial, then it most probably belongs to the earlier group. These orchids however, do not have adaptations like that off epiphytes. Water is easily or rather abundantly available on the forest floor (especially in the tropics), so are the nutrients. What is deficient is the sunlight. The canopy of the trees prevents much of the sunrays from reaching the ground. The air movement too is not much at the level of the terrestrial plants. So while growing terrestrial orchid keep this in mind. 

I will list the requirements of terrestrial orchids here. These require more water as compared to the epiphytes, but it's important to have a good drainage. Stagnant water near the roots might lead to rotting or even fungal growth. So the watering frequency should be higher, but no stagnation. Humidity should also be maintained a higher levels especially if the plant is from the tropics. In summers, I water my terrestrials once in the evening and in winters once in a week (that is, when summer temperatures are around 30 - 40°C and humidity around 80% and winter temperatures around 10 - 20°C and humidity around 30%).

Growth medium for terrestrials can be anything from soil, pebbles of different sizes, activated charcoal, bark pieces. The growth medium should hold the plant as well as be able to maintain sufficient moisture levels, so that the roots don't dry off. 

Light requirements of terrestrial orchids are easily fulfilled by early morning sun. Too strong or harsh sunlight can burn their leaves. There are some orchids though, which grow in open meadows or in areas where tree canopy is missing, such species can tolerate bright sun. Even if you have a sun loving orchid, avoid evening sun. I would rather keep the evening sun away from all my orchids! 

Terrestrials are mainly propagated through backbulbs/rhizomes. You can leave these in the orchid pot itself but cover it with the soil, which should not be allowed to dry out completely. 

I don't fertilize my terrestrial frequently, when I do it is with a very weak solution or may be by dropping 2-3 grains of urea around the root region.

Saprophytic orchids are rarely grown. They have a rhizome like structure lying underground, leaves are absent as these do not produce their own food. They are adapted to digest decaying organic matter.

Share on Social Media:  
Log in to Add a Comment

New Topics

  1. Rae Walker asked question Name help in category General Discussion
  2. John Small asked question Schomburgkia, species or hybrid in category General Discussion
  3. Robert H. Findlay asked question Help with ID of this Eria sp. in category General Discussion
  4. Osura Mindula Gunasena asked question Help to Identify the Id of this Vanda in category General Discussion
  5. Maricarmen Ferreira asked question Care for Myl Quest Fanguito in category General Discussion

New Comments

  1. Robert H. Findlay commented on topic "Help with ID of this Eria sp." by Robert H. Findlay
  2. Carol Holdren commented on topic "Name help" by Rae Walker
  3. Carol Holdren commented on member plant Dtps. Younghome Little Spirit by Heather A
  4. Sara D commented on member plant Den. Green Mist by Sara D
  5. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D
  6. Sara D commented on member plant Pot. Marie Yellow Bird var. Love Love by Sara D
  7. John Small commented on topic "Lady Bug or dangerous bug" by John Small
  8. Carol Holdren commented on topic "Help to Identify the Id of this Vanda" by Osura Mindula Gunasena
  9. Carol Holdren commented on topic "Care for Myl Quest Fanguito " by Maricarmen Ferreira
  10. Roberto Lizama commented on topic "Help to idenficate this orchid" by Roberto Lizama
  11. Mark Ashworth commented on topic "Orchid species search" by Mark Ashworth
  12. Debbie Chase commented on topic "Head on Shot to be Identified" by Debbie Chase
  13. Carol Holdren commented on member plant Phal. Liu's Cute Angel by Mo Chen
  14. Mo Chen commented on member plant Holc. flavescens by Mo Chen
  15. Carol Holdren commented on topic "Identify Orchid" by Debbie Chase
  16. Nilda Vega commented on member plant Bct. Roman Holiday 'Hamlyn' by Terence Kew
  17. Clint Dalrymple commented on member plant Pnr. graminifolia by Clint Dalrymple
  18. Carol Holdren commented on member plant Rth. Beau's Golden Touch 'Touch of Class' by Robert Rand
  19. Robert H. Findlay commented on member plant B. nodosa 'Remar x Mas Mejor' by John Small
  20. Carol Holdren commented on member plant Phal. buyssoniana by Robert Oceans