Orchids

Oncidium:  Water them to keep the medium moist but not soggy, checking for dryness before watering again.

Provide bright, indirect light, such as from an east or west-facing window with a sheer curtain, and maintain a warm environment (70-85°F day, 60-65°F night) with high humidity (40-75%) using a pebble tray or humidifier. Water them to keep the medium moist but not soggy, checking for dryness before watering again. Use a bark-based potting mix, and fertilize during active growth with a balanced or high-nitrogen formula. Finally, repot when new roots are forming on new growths to ensure the plant has room to develop.

Miniature Oncidiums, the most popular being Oncidium Twinkle, have a remarkable number of flowers for such a small plant.Miniature Oncidiums prefer to be in a small, tight pot and will dry out very quickly. It is a bit of a challenge keeping these little guys moist enough. Still, they are relatively easy to grow and have a generous bloom. Unlike standard Oncidiums, the miniature varieties are less likely to attempt to grow up and out of the pot.

To grow an Oncidium on cork bark, first prepare the orchid by rinsing and cleaning its roots, then mount it to the cork bark using fishing line or raffia, potentially with a small amount of sphagnum moss to retain moisture for the roots. Position the orchid with the new growth facing the mount to encourage root attachment and provide the plant with the humidity and light it needs, watering frequently by misting or dunking the mount.

Fall 2025:

Yellow (left) and White (right) Oncidum. Four-inch open-wood orchid basket from Esty, Machiela. Repotted Sept 7, 2025.
Yellow (left) and White (right) Oncidium. Four-inch open-wood orchid basket from Esty, Machiela. Repotted Sept 7, 2025. Moist moss growing medium.
Oncidium Yellow Sunlight
Oncidium Yellow Sunlight, received 10/21/2024.
Oncidium Twinkle White
Oncidium Twinkle White Snow, received 10/26/2024. About 8-inch tall.
Twinkle blooms Jan 2025
Twinkle blooms Jan 2025
Oncidium Twinkle blooms yellow Jan 2025
Oncidium Twinkle blooms yellow Jan 2025
Oncidium Twinkle blooms cream Jan 2025
Oncidium Twinkle blooms cream Jan 2025

Oncidium Grooming aos
Oncidium Grooming aos

Dendrobium:  Water thoroughly when the potting mix starts to dry, but avoid waterlogged conditions.

To grow Dendrobium orchids, provide bright, filtered light, typically from an east-facing window, with protection from harsh afternoon sun. Water thoroughly when the potting mix starts to dry, but avoid waterlogged conditions, as Dendrobiums prefer excellent drainage and free-draining mixes. Feed with a balanced orchid fertilizer during the growing season and reduce watering and fertilizer in winter to encourage flowering.

To grow a Dendrobium on cork bark, clean and trim the orchid’s roots, then soak the cork to make it pliable. Position the orchid on the cork, covering the roots with a small amount of damp sphagnum moss to retain moisture. Secure the orchid to the cork using fishing line, soft plant wire, or twine, ensuring a snug fit without constricting the roots. Hang the mounted orchid in a suitable location with good air circulation, bright filtered light, and appropriate temperature and humidity for your specific Dendrobium species.

Fall 2025:

Orchid 001, King Den Orchid:

closeup King Den Orchid wired onto bark, Sept 1 2025
closeup King Den Orchid wired onto bark, Sept 1 2025
King Den Orchid wired onto bark, Sept 1 2025
King Den Orchid wired onto bark, Sept 1 2025.

Flowers of King Den Orchid wired onto bark, Sept 1 2025
Flowers of King Den Orchid wired onto bark, Sept 1 2025.
Winter 2024-2025:

red purple Dendrobium Dec 30 2024
red purple Dendrobium Dec 30 2024

Red Dendrobiums orchids received 10 21 2024
Red Dendrobiums orchids received 10 21 2024

Two Dendrobiums orchids received Oct 21 2024 King on left Red on right
Two Dendrobiums orchids received Oct 21 2024 King on left Red on right

Dendrobiums orchids Venus 1 of 3 received 10 21 2024
Dendrobiums orchids Venus 1 of 3 received 10 21 2024

Dendrobium keikis, pull off at anchor to main crane
Dendrobium keikis, pull off at anchor to main crane

Dendrobium King of Monkey
Dendrobium King of Monkey

amazon purchase 10 15 2024 3 live Dendrobiums orchids
amazon purchase 10 15 2024 3 live Dendrobiums orchids

Paphiopedilum:

Lady Slipper Paphiopedilum Memoria Albert Eickhoff kolopakangii x stonei Paph Orchid
Lady Slipper Paphiopedilum Memoria Albert Eickhoff kolopakangii x stonei Paph Orchid

Water thoroughly but avoid letting the potting mix dry out completely.Paphiopedilums are low-light orchids that thrive with indirect sun exposure. Medium green leaves indicate sufficient light for blooming, while dark green leaves suggest a lack of light. If the leaves turn yellowish-green or develop a reddish tint on the edges, the light is too intense.

They prefer slightly cooler conditions, 50–60°F at night and 70–80°F during the day.  A 10–15°F drop between day and night temperatures, especially in winter, is crucial for initiating flower spikes.

Paphiopedilums thrive in 40–70% relative humidity, which is significantly higher than most homes, especially in dry Virginia winters. Paphiopedilums do not have pseudobulbs (water-storing stems), so they need consistent moisture. The frequency depends on your home’s conditions, but typically once a week is sufficient.

Fertilizing: Feed your orchid regularly, but weakly. Apply a balanced (20-20-20) orchid fertilizer at a quarter to half strength every one to two weeks. Flush the pot with plain water once a month to prevent salt accumulation, which can burn the roots.

Light needs are easy to fulfill for a Paphiopedilum. Most will thrive with 2 to 3 hours shaded sunlight a day. Many types of Paphiopedilum will grow well under artificial light. Use lightbulbs/LEDs of your choice that are about 1-2 feet above the plant.

The new growth on a Paph consists of a “fan” of new leaves that emerges from the base of the previous fan.

Paphiopedilums benefits from a temperature differential, especially a cool period for multifloral types, between autumn and spring when blooms typically appear.

A new root tip is generally rounded and glossy, while a flower spike is pointy and often a different color, such as greener. The tip of a flower spike can have a “mitten-like” or single, non-glossy, pointy shape, which is easier to see after a week or two. Flower spikes usually emerge from new growth, and new growth matures over one to two years, producing a single flower.

Encourage Flowering
Provide bright, indirect light, or morning sun, but protect the leaves from harsh sunlight, which can cause them to burn. Temp drop at night.

To grow Paphiopedilum orchids on cork bark, prepare the orchid by cleaning and trimming roots, then attach the plant to a suitable piece of cork bark using a small amount of sphagnum moss and fishing line or florist wire. The cork bark provides a natural surface for the roots to adhere to as they grow. Ensure the orchid’s crown is not buried, which can cause rot, and consider mounting the plant to prevent water from collecting in the crown.

paphiopedilum growth problems AOS
paphiopedilum growth problems AOS

Paphiopedilum Lady received Oct 31 2024
Paphiopedilum Lady received Oct 31 2024

Paphiopedilum Memoria Albert Eickhoff kolopakangii x stonei Paph Orchid leaves
Paphiopedilum Memoria Albert Eickhoff kolopakangii x stonei Paph Orchid leaves

Phalaenopsis:

White Phalaenopsis
Tall White Phalaenopsis purchased Amazon Fall 2024.

Water when medium is dry.

The Moth orchid is the most common orchid due to its ease of production and the ability to force it to bloom year-round. Phals are easily grown in the home and stay in bloom for a very long time. A mature phal will be in bloom much of the year with graceful inflorescences loaded with good-sized blooms. From pure whites to unusual spotted harlequins, phals are sure to please.

Mounting Phalaenopsis onto bark provides the airy, well-draining environment necessary for Phalaenopsis orchids, mimicking their natural growth on tree branches.  For mounting, use a piece of cork or oak bark, securing the orchid’s roots with damp sphagnum moss and fishing line.

To grow Phalaenopsis orchids, provide them with bright, indirect light, and water only when the potting medium is dry, usually every 7-10 days, using lukewarm water at room temperature. Maintain normal home temperatures (65-75°F), provide high humidity (40-70%) with a humidifier or wet pebble tray, and use a well-draining orchid potting mix, like fir bark or sphagnum moss. Feed your orchid with a weak, balanced orchid fertilizer “weakly, weekly” or every other watering. Repot every 1-2 years after flowering, trimming any soft, rotted roots.

two Phalaenopsis about to be potted into 4-inch wood baskets. Sept 8, 2025.
two Phalaenopsis about to be potted into 4-inch wood baskets. Sept 8, 2025.

two Phalaenopsis in wood baskets, Sept 8, 2025.
two Phalaenopsis in wood baskets, Sept 8, 2025.

overwatering orchids
overwatering orchids