Download

Rate Your Growing Skills

by Tom Sheehan

Originally published in The Florida Orchidist

Posted by Sys Admin almost 6 years ago.

Article Blog   Article Index

 

ORCHIDOPHILOS by Tom Sheehan

Frequently I am asked by an orchidist how to tell whether or not he/she is doing a good job of growing his/her plants. Actually, this is a good question, because often times we look at our plants and wonder how well they are thriving, but have nothing for comparison. It is relatively easy to tell whether your plants are up to par or not. Color is always a good positive factor because the intensity of green will vary among genera, with some well grown plants dark green and some almost yellow green. But there is an excellent indicator that everyone can use to evaluate plants.

With sympodial orchids, e.g., Cattleya, Dendrobium, the new growth in mature plants should be equal to or larger than the height of the last growth, while in unflowered seedlings it should always be larger. If the newest growth is smaller, then you are not doing a good job of growing, or the plant may be suffering from soluble salt damage or possibly some pest problem and it is time to do something.

In monopodial orchids e.g., Vanda, Phalaenopsis, the situation is very similar. With these plants the spread of the new leaves should be equal to or greater than the last mature leaf or set of leaves. Again, in seedlings you expect each new leaf to be larger until the plant is mature and flowering, at which time the new leaves should be of equal size from then on. A well grown large strap leaf Vanda plant should have all the leaves the same length so the leaf tips would all touch a stick held perpendicularly to the leaves. I should point out that you are comparing mature leaves, not developing leaves. Consequently, you must be able to recognize the difference for all the genera you are growing. Once you do this the rest is easy.

Another problem that occurs in the fall of the year is the formation of brown papery sheaths on some Cattleya plants. Novices often cut them off, thinking they have lost the flowers, and this is not so. Those species and their hybrids that have the “mossiae” growth cycle, e.g., trianaei, labiata, produce their flowers from within the papery bracts. These plants flower from early fall through May, The other group, known as “gigas” flower in spring and summer while the sheaths are green and succulent. So be careful before you cut off any papery sheaths this fall when checking your plants. Gently squeeze the sheath and you will feel the buds inside.

Share on Social Media:  
Log in to Add a Comment
New Topics
  1. Raina Steiner asked question Ellison Onizuka in category General Discussion
  2. Paph hsinying jewel x paph hsying jewel september 09 2018 Adrienne Alexander asked question How to add a not-listed plant in category General Discussion
  3. Juan Martin Cabrejos asked question Any idea of this Cattleya? in category General Discussion
  4. Karl Olsen asked question Phalaenopsis Hope Star in category Phalaenopsis
  5. Brenda Sharpe asked question Dendrobium clavator in category General Discussion
New Comments
  1. Dsc 0747 Kathleen Kust commented on topic "Ellison Onizuka" by Raina Steiner
  2. Paph hsinying jewel x paph hsying jewel september 09 2018 Adrienne Alexander commented on topic "How to add a not-listed plant" by Adrienne Alexander
  3. Image Carol Holdren commented on member plant Rly. Raspberry Lemonade by Paul Keller
  4. Wbf4kvs Sys Admin commented on topic "Any idea of this Cattleya?" by Juan Martin Cabrejos
  5. Wbf4kvs Sys Admin commented on topic "Phalaenopsis Hope Star" by Karl Olsen
  6. Image Carol Holdren commented on topic "Dendrobium clavator" by Brenda Sharpe
  7. Greg Barne commented on topic "Using triacontanol on orchids" by Greg Barne
  8. Image Carol Holdren commented on member plant Phal. bellina by Andry Harmony
  9. Wbf4kvs Sys Admin commented on orchid Doc. teretifolia
  10. Wbf4kvs Sys Admin commented on orchid Den. clavator