Showing posts with label Dendrobium phaelenopsis. Show all posts
Showing posts with label Dendrobium phaelenopsis. Show all posts

Saturday, January 15, 2011

Orchids in January: Promises

A couple of hours with an ice pack on my back, and 600mg of ibuprofen, and I was up to walking around with the camera and looking at the "promises" of orchid blooms. They are gradual, but they always bring hope. A bit over one year ago, I didn't know if I could bring orchids into bloom, or if they would even survive. Now the windows are full of orchids, many with buds or spikes. Most are in South windows unless otherwise stated.

This Cymbidium continues to lengthen its spike. I try to be patient. Actually, there is no other choice! It's my first attempt at a Cymbidium, and I'm happy it's come this far. The flowers are brownish with magenta spotted lip, difficult for me to describe. If I've indexed it right, it can be found by clicking on the Cymbidium label.

As I was walking around taking photos, I noticed a new spike on this Burrageara Stefan Isler "Lava Flow". I am SO EXCITED! COOL! I was ready to give up hope for reblooming Oncidium alliance orchids. This one really grew nicely last year, several new pseudobulbs, a full specimen plant. I've been noticing the newer pseudobulbs swelling, and looked as recently as this week without seeing the any new spikes. I was starting to think about whether I wanted to keep it.

So like a proud parent with a camera, here is the spike! Did it grow from almost nothing to 3 inches overnight? Or did I just not notice it? Still quite some growth to happen before it blooms, but I think that the biggest hurdle is getting it to decide to make a spike. This is so cool!

Like the good child in the family, this Yamamoto Dendrobium Fancy Angel "Lycee" continues to behave and impress, without much encouragement, out performing everyone else and not getting a lot of credit for it because it is so reliable. Starting to spike again after a beautiful performance 2 months ago. A very reliable and beautiful flower.

This Trader Joe's Yamamoto Dendrobium "NOID Purple" (my name) is also a strong performer, but hasn't bloomed before this winter. Here we see new buds swelling. I also bloomed last winter and again during the summer. (Added later - I forgot I had decided this is Yamamoto Dendrobium Love Memory "Fizz". Looks just like it, and with that name I must have it.)

Here is the keiki that I started from above Trade Joe's Yamamoto Dendrobium "Purple", sharing a supplemental light source in the South window. The light is mainly there for the two Dendrobium phalaenopsis - type hybrids, that I suspect need more light in the winter. They are "Anching Lubag" and "Genting", for the record. Whether they will grow and rebloom is a question I hope is answered this year. The Yamamoto keiki, now a plant on it's own, is fattening up nicely and is maturing. It would be cool if it bloomed at a small size, but regardless, it's fun to have started an orchid plant "from the beginning".

Here is the Trader Joe's Epidendrum "NOID Red" (again, my name. Creative....) but it needs to be called something. These are said to be very easy, but you never know until you grow them yourself. It's making several new spikes on growth that happened in 2010 so it's another case of "I did it!" It's in a South window.

Iwanagaara Appleblossom "Fantasy" appears to have a nice spike on one of the new, larger-fatter pseudobulbs that grew last year. It's in a South window. I understand that these can give up while there is still a sheath, but have some hope. Holding it to the light, there appears to be a flower bud inside that sheath. Same is true for unpictured Potinara Achung Yoyo "Little Goldfish" which, if only because of the name, I would love to see it bloom.

A beautifully burgundy-leafed Phalenopsis (or is it Doritonopsis?) which has had a slowly growing flower spike for about 6 months. Inch by inch..... It's in a North window.

This rebloom-on-old-spike Phaenenopsis is another case of reliability to the point of taking for granted. Of course, I haven't had it bloom from a de novo new spike yet, but it's been in bloom for months and months. The photo doesn't do it justice, it's darker than the photo shows. It's in a West window.

Another Phalaenopsis about to rebloom on existing spikes. This one is white with pink polka-dots. Quite pretty. It also has a de novo spike. It's in a South window. In my area, even South windows are gloomy this time of year.

Sunday, September 26, 2010

Dendrobium phaelenopsis hybrid

Yesterday while I was at the local nursery browsing around, I saw this Dendrobium phaelenopsis hybrid. It's small, windowsill size, nice flower. It had a tag from a local grower, which I thought was cool. When I got it home, I realized there was no hybrid name, annoying but not a big deal.


Illustration via Wikimedia commons, 1901. Lindenia Iconographie des Orchidées. Following Dendrobium info is from the Canadian Orchid Congress, summarized. Probably as good a source of info as any, especially in Northern areas. I edited the instructions for brevity and for my specific conditions, but much is directly from the linked site. There are several reasons why it's hard to find culture info specific to a specific Dendrobium: there are many types, and culture requirements vary; there are many many hybrids; and naming is a mess. I still haven't sorted out whether these are really Vappodes phaelenopsis hybrids. Wikipedia routes searches for Dendrobium phaelenopsis to Vappodes phaelenopsis. Plus, did they really have to give these a species name that is identical to that of an unrelated genus (Phaelenopsis)? Confusion is also noted at orchidculture.com "There is a great deal of confusion surrounding these species, and it will probably continue to be with us for some time. Although these two species have been lumped together at times and are still considered to be synonymous by some authorities, the most recent taxonomic work has them listed as separate species. While very similar to each other, the flowers of D. bigibbum tend to be somewhat smaller, have sepals and petals that are more strongly reflexed, and a lip that is broader and more rounded or notched at its apex. In addition, plants known as D. bigibbum are found in areas nearer the equator and, therefore, require much warmer temperatures, especially during winter." Note that Dendrobium biggibum is an earlier name for Dendrobium phalaenopsis. I think.

*Use a coarse medium. Fir bark mixtures are best (note, the specimens that I bought from Missouri botanical garden, and this one, are in small lava chunks. They drain VERY fast)
*Repot when the growth has reached the edge of the pot or if the
medium is beginning to decompose...Repot as new growths are just starting to form.
*These plants like a rapid drying cycle – grow in the smallest
possible pot.
*Roots should be moist at all times when in active growth. Allow to dry out somewhat as the growth matures and when not actively growing.
*When watering, water thoroughly. (I let water run through the medium each time)
*If hard water is used, water very heavily to flush minerals. Rain water is better (I use rain water).
*Fertilize weakly and frequently with a balanced fertilizer. (I use the Schulz orchid food, 1/4 tsp per gallon, weekly, during active growth. For bloom time and when growth is not active, I either don't fertilize or use a low-nitrogen Grow-more bloom food, also weakly.
*Healthy leaves produce more and bigger flowers:
*Light should be medium to high light levels are appropriate. Leaves should be a light green, not yellowish (too much light) or dark green (too little light). They should be somewhat stiff, not long and floppy (more light needed). A reddish edge to the leaves indicates the light is on the upper boundary of a proper level of light.
*Grow in 2-4 four hours of sunshine on an East, West or South window sill.
*Dendrobiums do best with 60-70% humidity but will grow and bloom at somewhat lower humidity levels. Use humidifier to raise humidity – humidity pans and misting minimally effective. Enclosing plant growing areas is effective
but ensure fresh air and air movement to avoid mold and rot.
*Dendrobium phalaenopsis hybrids are warm growing, with night minimum temperatures of 18°C (65 F) and day maximums of 32°C (90 F). (My range is more like 55 at night and 70 during the day, winter; I may need to keep this plant at work which is warmer) The orchid culture site linked above states "TEMPERATURES: Summer days average 85-86F (29-30C), and nights average 72F (22C), with a diurnal range of 13-14F (7-8C). The diurnal range varies only 3F (2C) all year."
*Dendrobium phalaenopsis may bloom at any time during the year and the flowers last for 4 to 8 weeks.
The orchid culture site also states "D. phalaenopsis is often considered difficult to grow and bloom because it requires high light, warm winter temperatures, and a winter dry season, a combination that is sometimes difficult to provide in a general collection. So we'll see. I better hold of on adding any more to this collection, no need for all leaf and no flower with a lot of frustration in the future. As I often state, "We'll see".

Friday, September 17, 2010

Orchid Blogging

Still learning about orchids, and watching their progress over the past year. It's been about that long since I started becoming more interested in them.

The way I look at it, the first part is to not-kill them. The second part is to get them to grow. The 3rd part is to get them to bloom. Propagation is optional, but fun. If purchased in-bloom, another aspect of the first part is to keep them blooming as long as possible. That seems to be rather easy.

This unlabeled Paphiopedilum hybrid, Maudiae type, was one of the first that I obtained. I need to check - I think it's a green flowered type. Should be back in the links (labels). I've been treating it as the books instruct, medium light, general orchid plant food weakly weekly. It added a couple of new growths. I count the leaves, thinking that if a growth reaches 5 or 6 leaves, it will be time to bloom. Not certain it that's true, but last week I noted the appearance of a bud. Cool!

Close-up of the bud. Another may be headed there as well, I'll add it if it really is a flower bud. I understand that the process from bud to blossom is gradual, and patience is needed. The upside of that slow process, is that once in bloom, the flowers can last a month or more. Regardless, I'm excited!

The books and the Yamamoto website (see prior posts) promote a season of coolness in bright light to promote Dendrobium nobile hybrid blooming. These are under eaves (out of the rain) south side of house (bright light). One can hardly call the light here in the Pacific Northwest "direct sunlight" so I'm not concerned about sunburn, and anyway these plants were in full unfiltered sun all summer long. This treatment, allowing coolness at night and not soaking them, keeping them in bright light, is considered key to obtaining nice flowers on these hybrids.

Of course, this NOID Dendrobium nobile hybrid continues to cheerfully violate the rules, blooming and blooming and blooming. It is indoors in a south exposure, but spent the summer in the same location as the others.

Dendrobium phaelenopsis "Genting" obtained last month at Missouri Botanical Gardens in St. Louis, after traveling to midwest for my dad's funeral. It continues to bloom cheerfully. I'll hold off any repotting until it finishes blooming.

This Cymbidium has been in a full-sun exposure, all summer. I generally gave it "weekly weakly" feeding, but on occasion provided some higher nitrogen plant food, because most instructions suggest higher nitrogen in summer. I'm keeping it outside for cool nights, per standard instructions for this genus.

Here's the question now - Is this a flower bud? Or another growth spurt. Watchful waiting!

Now we get to "the problem with impulse buying". Last year I bought this plant on impulse at a big box store. It was in a tiny plastic bag. The label is below.

I didn't know anything about Vandas or Ascoscendas at the time. Both are probably inappropriate for this setting and my house, needing more light than I can provide.

Instructions not too helpful either. Can't even tell, is it an Ascocenda or a Vanda? Peobably should throw it away, space is valuable. But, it stays alive, growing slowly, so I'll keep it for now.