Do a finger test. This is the best way to determine whether an orchid needs more water. Stick your pinky finger into the potting mix, taking care not to disturb the orchid's roots. If you don't feel any moisture, or you feel just a little, it's time to water the orchid. If you feel moist potting mix right away, give it more time. When in doubt, you should wait an extra day.
Epiphytic orchids, those that grow upon a support, have modified aerial roots that can sometimes be a few meters long. In the older parts of the roots, a modified spongy epidermis, called a velamen, has the function of absorbing humidity. It is made of dead cells and can have a silvery-grey, white or brown appearance. In some orchids, the velamen includes spongy and fibrous bodies near the passage cells, called tilosomes.
Oncidium, perhaps more accurately the oncidium alliance, are a group of plants from South America that span a wide range of habitats. Inside the oncidium alliance there are a number of genera that hybridize freely to create what we call intergeneric oncidium hybrids. These can come in all sorts of shapes and sizes but are generally characterized by large quantities of small to medium flowers borne on a branched stem that generally forms a Christmas-tree shape. The most commonly identified Oncidium are the yellow “dancing lady” type.
With ageing, the pseudobulb sheds its leaves and becomes dormant. At this stage, it is often called a backbulb. Backbulbs still hold nutrition for the plant, but then a pseudobulb usually takes over, exploiting the last reserves accumulated in the backbulb, which eventually dies off, too. A pseudobulb typically lives for about five years. Orchids without noticeable pseudobulbs are also said to have growths, an individual component of a sympodial plant.
Always water early in the day so that your orchids dry out by nighttime. The proper frequency of watering will depend on the climatic conditions where you live. In general, water once a week during the winter and twice a week when the weather turns warm and dry. The size of your orchid container also helps determine how often you need to water, regardless of climate conditions. Typically, a 6-inch pot needs water every 7 days and a 4-inch pot needs water every 5 to 6 days.
The Gongora orchid genus is a really neat type of orchids, related to Stanhopea. They have nice, strong fragrances, often of cinnamon, allspice, or nutmeg. The flower stems hang over the pot's edge and the flowers point downwards. They can adapt to a wide variety of lighting conditions and a relatively large temperature range, but like a lot of water.
The main characteristic of this type of orchid is its very pleasant aroma, which means you will likely smell it even before you see it. The pure white flowers release their scent at night, are frequent bloomers, and can bloom all year long in many places. They are a small but showy type of orchid, and their leaves are long, reed-like in shape, and light green in color. They are also easy to grow and are low-maintenance flowers.
Horticultural techniques have been devised for germinating orchid seeds on an artificial nutrient medium, eliminating the requirement of the fungus for germination and greatly aiding the propagation of ornamental orchids. The usual medium for the sowing of orchids in artificial conditions is agar agar gel combined with a carbohydrate energy source. The carbohydrate source can be combinations of discrete sugars or can be derived from other sources such as banana, pineapple, peach, or even tomato puree or coconut water. After the preparation of the agar agar medium, it is poured into test tubes or jars which are then autoclaved (or cooked in a pressure cooker) to sterilize the medium. After cooking, the medium begins to gel as it cools.
If only there was an easy guide or a little water fairy that hovered over your plants and told you exactly when and how much to water. Unfortunately, there isn't. But I think this is one of the satisfying reasons we grow orchids. It's all about balance and instinct—and plenty of patience. Here are some of the factors you need to consider when developing a watering schedule:
Avoid overwatering which leads to the demise of many more orchids than underwatering. Constant wetness will cause the roots to rot, which leaves the plant without a means for taking up nourishment which then causes the leaves to droop and will eventually kill the plant. The classic advice is to water the day before the plant dries out. If you have to let the plant go dry to figure out what a dry plant weighs, it will not kill the plant and will make you a better grower. Another measure is to use the pencil trick (the point of a sharpened pencil, when inserted into the medium, will darken with moisture if the plant has enough water). And, there's always the old standby - put your finger in the mix. If it feels wet, it is wet. If you aren't sure whether it is time to water, wait one more day.
Orchid flowers primitively had three stamens, but this situation is now limited to the genus Neuwiedia. Apostasia and the Cypripedioideae have two stamens, the central one being sterile and reduced to a staminode. All of the other orchids, the clade called Monandria, retain only the central stamen, the others being reduced to staminodes (4). The filaments of the stamens are always adnate (fused) to the style to form cylindrical structure called the gynostemium or column (2). In the primitive Apostasioideae, this fusion is only partial; in the Vanilloideae, it is more deep; in Orchidoideae and Epidendroideae, it is total. The stigma (9) is very asymmetrical, as all of its lobes are bent towards the centre of the flower and lie on the bottom of the column.
Check your water. For a long time, serious growers insisted that orchids could only be watered with rainwater. Nowadays, most people just use tap water, and this is fine. However, be aware that treated water may have higher salt content, and some water is high in calcium. If you see deposits forming on your plants, you should seek out a new water source.
Orchids come in different sizes. I have a miniature phal in a 3-inch pot. This orchid needs watering more often than the larger ones in 6″ deep pots. An orchid in a larger pot will need watering less often, but will need more water quantity wise. The material of the pot will also make a difference. Those in plastic will dry out a bit slower than those planted in porous terra cotta.
It sounds like it is not getting enough light. Repotting once per year after blooms have dropped is a good thing. Use a high quality bark mix for orchids or high quality sphagnum moss. If the flower spike dried out you did exactly the right thing by removing it. So try more light without direct sun and be sure to water only if the mix is dry. No wet feet for most orchids. Good luck
The Bulbophyllum orchid genus is the largest in the Orchidaceae family, with over 1800 species, making it the third largest genus of plants. (Taxonomists will probably eventually split it into several smaller genera, but with so many types of orchids it's a massive undertaking!) They differ widely in appearance, but all have a single leaf emerging from the top of the pseudobulb, flower stems coming from the bottom of the pseudobulb, and a hinged lip designed to tip insects against the column. Many are pollinated by flies, and stink like dung or rotting carcasses, which is a great conversation starter and gives you bragging rights for putting up with it! (They don't all stink, fortunately.) The rhizomes wander all over the place and often branch freely, so it's easy to grow an impressive specimen.
The family encompasses about 6–11% of all seed plants. The largest genera are Bulbophyllum (2,000 species), Epidendrum (1,500 species), Dendrobium (1,400 species) and Pleurothallis (1,000 species). It also includes Vanilla–the genus of the vanilla plant, the type genus Orchis, and many commonly cultivated plants such as Phalaenopsis and Cattleya. Moreover, since the introduction of tropical species into cultivation in the 19th century, horticulturists have produced more than 100,000 hybrids and cultivars.
Brassia, Comparettia, Odontoglossum, Polystachya, Cochleanthes, Tolumnia, Trichocentrum, Brassavola, Psychilis CC Image courtesy of Arne and Bent Larsen on Wikimedia Commons | Catasetum, Cymbidium CC Image courtesy of http://www.larsen-twins.dk on Wikimedia Commons | Cephalanthera CC Image courtesy of Sramey on Wikimedia Commons | Dichaea, Eulophia, Galeandra, Trichoglottis, Lycaste, Stanhopea, Caularthron, Domingoa, Prosthechea, Dendrobium, Goodyera, Stenorrhynchos, Pogonia, Gymnadenia CC Image courtesy of Orchi on Wikimedia Commons | Dipodium CC Image courtesy of David Lochlin on Flickr | Ionopsis, Campylocentrum CC Image courtesy of Maarten Sepp on Flickr | Macradenia CC Image courtesy of Maarten Sepp on Flickr | Koellensteinia CC Image courtesy of Alex Popovkin on Flickr | Leochilus CC Image courtesy of Marcos Antonio Campacci on Wikimedia Commons | Oeceoclades, Bletia, Chiloschista, Renanthera, Miltonia, Brachionidium, Cattleya, Lepanthopsis, Nidema, Scaphyglottis, Trichosalpinx, Eria, Coelogyne, Cyclopogon, Eltroplectris, Eurystyles, Platythelys, Prescottia, Psilochilus, Triphora, Paphiopedilum CC Image courtesy of Dalton Holland Baptista on Wikimedia Commons | Oncidium CC Image courtesy of Calyponte on Wikimedia Commons | Arethusa CC Image courtesy of Chris Meloche on Wikimedia Commons | Arundina CC Image courtesy of Kevin Gepford on Wikimedia Commons | Calopogon CC Image courtesy of Bob Peterson on Flickr | Cleisostoma CC Image courtesy of Earth100 on Wikimedia Commons | Dendrophylax CC Image courtesy of Mick Fournier on Wikimedia Commons and CC Image courtesy of Big Cypress National Preserve on Flickr | Micropera, Crepidium CC Image courtesy of Raabbustamante on Wikimedia Commons | Taeniophyllum CC Image courtesy of Airborne Pilot on Flickr | Corallorhiza CC Image courtesy of Wsiegmund on Wikimedia Commons | Maxillaria CC Image courtesy of Walter on Flickr | Govenia CC Image courtesy of Sanfelipe on Wikimedia Commons | Isochilus CC Image courtesy of Patricia Harding on Wikimedia Commons | Lepanthes CC Image courtesy of Quimbaya on Flickr | Elleanthus CC Image courtesy of Philipp Weigell on Wikimedia Commons | Pleurothallis CC Image courtesy of KENPEI on Wikimedia Commons | Restrepiella CC Image courtesy of Moises Béhar on Wikimedia Commons | Bulbophyllum CC Image courtesy of Montrealais on Wikimedia Commons Calanthe CC Image courtesy of Qwert1234 on Wikimedia Commons | Phaius CC Image courtesy of Hectonichus on Wikimedia Commons | Spathoglottis CC Image courtesy of Vaikoovery on Wikimedia Commons | Calypso CC Image courtesy of Walter Siegmund on Wikimedia Commons | Tipularia CC Image courtesy of TheAlphaWolf on Wikimedia Commons | Malaxis CC Image courtesy of Bernd Haynold on Wikimedia Commons | Oberonia CC Image courtesy of Ramesh Meda on Flickr | Anoectochilus CC Image courtesy of Badlydrawnboy22 on Wikimedia Commons | Cranichis CC Image courtesy of Americo Docha Neto on Wikimedia Commons | Mesadenus, Pteroglossaspis CC Image courtesy of NC Orchid on Flickr | Pelexia CC Image courtesy of Elena Gaillard on Wikimedia Commons Ponthieva CC Image courtesy of Jose Lacruz on Wikimedia Commons | Spiranthes CC Image courtesy of Eric in SF on Wikimedia Commons | Zeuxine CC Image courtesy of Panoso on Wikimedia Commons Dactylorhiza CC Image courtesy of Uoaei1 on Wikimedia Commons | Habenaria CC Image courtesy of J.M.Garg on Wikimedia Commons | Ophrys, Pseudorchis CC Image courtesy of Hans Hillewaert on Wikimedia Commons | Orchis CC Image courtesy of Algirdas on Wikimedia Commons | Platanthera CC Image courtesy of Enrico Blasutto on Wikimedia Commons | Epipactis CC Image courtesy of Dcrjsr on Wikimedia Commons | Listera CC Image courtesy of Superior National Forest on Flickr | Sobralia CC Image courtesy of João Medeiros on Flickr | Broughtonia CC Image courtesy of Walter on Flickr Masdevallia CC Image courtesy of trixty on Flickr | Isotria CC Image courtesy of Jason Hollinger on Flickr | Flickingeria CC Image courtesy of Averater on Wikimedia Commons | Cleistesiopsis CC Image courtesy of Charly Lewisw on Wikimedia Commons | Cypripedium montanum CC Image courtesy of Bill Bouton on Flickr | Cypripedium reginae CC Image courtesy of Orchi on Wikimedia Commons | Disperis, Encyclia, Epidendrum, Vanilla planifolia, Vanilla barbellata CC Image courtesy of Malcolm Manners on Flickr | Govenia CC Image courtesy of Bosque Village on Flickr | Psychopsis CC Image courtesy of LadyDragonflyCC – >;< on Flickr | Aplectrum CC Image courtesy of Fritz Flohr Reynolds on Flickr
The potting mixture, or growing medium, for a phalaenopsis orchid should be good at both absorbing water and providing airflow to the roots of the plant. Therefore, consider using media such as tree bark, coconut coir, clay pellets, perlite, pumice pebbles, and sphagnum moss, either on their own or blended together. If you live in a humid climate, choose a courser potting mixture that dries quickly and provides the best drainage. On the other hand, those who live in a dry climate should use a finer medium that will dry more slowly and hold more moisture.