Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Results 1 to 5 of 5
Like Tree6Likes
  • 5 Post By raybark
  • 1 Post By raybark

got questions regarding Semi-Hydro Orchid Growing

This is a discussion on got questions regarding Semi-Hydro Orchid Growing within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; 1) can i use slow release fertilizers in this setup? 2) what other media can ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    thurrmax's Avatar
    thurrmax is offline Member
    Real Name
    Rocky
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    Cymbs, Phals, Oncs & Trichs
    Join Date
    Jan 2015
    Gender
    Male
    Location
    Manila, Philippines
    Posts
    47
    Member's Country Flag

    Default got questions regarding Semi-Hydro Orchid Growing

    1) can i use slow release fertilizers in this setup?
    2) what other media can i use aside from leca balls?
    3) when is the ideal time to switch to S/H?
    4) i have trichoglottis, mokara, den anosmum, phal and thrixspermum
    can i switch them all to S/H

    thanks

    rocky

  2. #2
    raybark's Avatar
    raybark is offline Senior Member
    Real Name
    Ray Barkalow
    My Grow Area
    Under Lights
    Join Date
    Oct 2012
    Location
    Oak Island NC
    Posts
    1,274

    Default

    As the inventor of the orchid-growing technique, let me take a shot at these:

    1) I recommend against slow-release fertilizers. They are typically little spherical particles that can help trap water between media particles, helping suffocate roots, and they will ultimately settle into the reservoir, making the dissolved fertilizer concentration too high. Very dilute, water-soluble fertilizers are a much better choice.

    2) Anything inorganic can be used, but LECA is by far the best. I have experimented with many, many materials, and have yet to find anything better.

    3) The best time for any repot is just when new root growth is emerging from the base of the plant. When roots grow, they "tailor" themselves on a cellular level to be optimal for the conditions into which they are growing; once they have grown, they cannot change. Move a plant into a different environment, and existing roots are likely sub-optimal, and will eventually succumb. The new roots, optimized for the new environment, will sustain the plant. The rate at which the old roots fail depends upon how different the two environments are.

    4) Any plant can be grown in semi-hydroponics, but here's the thing: "Semi-hydroponics" does not completely define "orchid culture". S/H primarily addresses water and nutrient delivery, and does not address any of the other parameters of orchid culture. Your success or failure depends upon how well the constantly moist, airy medium "plays with" all of your other parameters, and meets the requirements of the plant. And since plants have individual needs....

    I'll give you an example. I find that paphs are essentially a "sure thing" in S/H, while others kill them. Some folks view hard-cane dendrobiums as great "S/H beginner" plants, but I - with more experience with the technique than any other person - cannot grow them that way to save my life. The difference isn't the pot design or medium, it's the rest of the conditions.

  3. #3
    thurrmax's Avatar
    thurrmax is offline Member
    Real Name
    Rocky
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    Cymbs, Phals, Oncs & Trichs
    Join Date
    Jan 2015
    Gender
    Male
    Location
    Manila, Philippines
    Posts
    47
    Member's Country Flag

  4. #4
    Yug's Avatar
    Yug
    Yug is offline Mostly-Species Snob
    My Grow Area
    Outside 24/7
    Favorite Orchid(s)
    Vanda
    Join Date
    Sep 2014
    Gender
    Male
    Location
    Hawaii
    Posts
    559
    Member's Country Flag

    Default

    I've had hard-cane and soft-cane dendrobiums (D. nobile & D. anosmum) in s/h for years. Their roots adapt quickly, and it doesn't seem to harm the growth. I've tried with vandas, and it seems to hold too much moisture for them. If the root penetrates the media, it does well in the slightly damp area, but more moisture in the lower area caused root rot. Cattleyas do well if, like Ray said, you put them in s/h as the new roots emerge. It even worked with a C. aclandiae, which everyone was telling me had to be grown mostly dry. The roots grew down into the liquid reservoir with no harm at all. It bloomed well, too.

  5. #5
    raybark's Avatar
    raybark is offline Senior Member
    Real Name
    Ray Barkalow
    My Grow Area
    Under Lights
    Join Date
    Oct 2012
    Location
    Oak Island NC
    Posts
    1,274

    Default

    1) Moisture, by itself, does not cause root rot. If it did, most of the orchids we grow would be extinct in the wild. Moisture - if coupled with something else that results in a negative cultural situation - can cause death, and rot follows.

    2) Like Yug, vandaceous plants and S/H are not a good combination for me, but I've got lots of customers - especially folks in dry climates - for whom it works great.

Similar Threads

  1. Trying semi-hydro for three orchid plants
    By Kmac in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 41
    Last Post: April 18th, 2015, 12:44 AM
  2. my result of semi hydro orchid growing
    By daniel in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 75
    Last Post: May 2nd, 2012, 08:03 AM
  3. Semi-Hydro with a dendrobium orchid
    By siaogu in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 8
    Last Post: January 10th, 2011, 08:30 AM
  4. Pot Bonnets for Semi-Hydro Orchid Containers
    By admin in forum Orchid Forum Articles
    Replies: 2
    Last Post: May 15th, 2009, 02:00 PM
  5. Semi -Hydro Pot Growing
    By edcramer in forum General Orchid Culture
    Replies: 17
    Last Post: July 22nd, 2004, 06:13 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.