How to Look After Orchids: The Ultimate 5-Step Beginner’s GuideHow to Look After Orchids in 5 easy steps

Phalaenopsis orchids—affectionately known as Moth Orchids—have taken the UK houseplant market by storm. Over the last decade, these enigmatic plants native to Southeast Asia have transformed from rare tropical luxuries into incredibly affordable household staples, frequently found in supermarkets and garden centres for as little as £5. They are also among the most popular green gifts to receive over the Christmas and holiday seasons.

Despite their reputation for being fussy, Moth Orchids are actually among the toughest houseplants you can own. The secret to prolific, recurring blooms lies in understanding their natural habitat. In the wild, orchids are epiphytes: they don’t grow in dense soil, but instead thrive nestled among rocks, inside old stone walls, and perched high on the limbs of mossy trees in warm, highly humid tropical environments.

By replicating these conditions at home in 5 simple steps, you can keep your orchid healthy, vibrant, and blooming for up to a decade or more.

Step 1: Replicate the Tropical Environment (Location & Temperature)

Because orchids naturally grow beneath dense tropical canopies, they thrive in bright, filtered light rather than harsh, direct sun.

• The Perfect Spot: Position your orchid on an east- or west-facing windowsill protected by a net curtain or blind. They prefer a balance of roughly 70% shade and 30% sunlight. Avoid prolonged direct afternoon sun, which will scorch the leaves, causing them to turn yellow from the center, drop off, and potentially kill the plant.
• The Bathroom Advantage: Bathrooms are highly ideal locations. The warm, moist air generated by your daily shower or bath perfectly mimics the humid conditions of a tropical forest.
• Temperature Stability: Orchids despise sudden environment changes and cold drafts. They require a stable room temperature and should never be subjected to temperatures below 14.4°C (58°F). A comfortable range between 15.5°C and 26.6°C (60°F–80°F) is optimal.
• Winter Window Alert: During cold winter nights, even double-glazed windows can drop below safe temperatures. Move your orchid slightly away from the glass pane into the room to protect it from freezing drafts, and keep it clear of drying radiators or fan heaters.

Step 2: Master the Art of Watering & Humidity

More houseplants die from overwatering than underwatering, and orchids are especially sensitive to “wet feet.”

How to Tell When Your Orchid is Thirsty

Look directly at the roots inside the pot and the bark medium rather than guessing:

• Green Roots: The plant is well-hydrated. Do not water.
• Silver or Grey Roots: The plant is thirsty. It is time to water.
• The Lollipop Stick Test: If you are unsure, push a wooden lollipop stick deep into the bark mix and pull it out. If the wood feels or looks damp, hold off on watering.

The Best Watering Method

Water your orchid roughly every 4–5 days during the hot summer months, reducing this to once a fortnight during the winter. Always use tepid rainwater or water at room temperature. Never use icy-cold tap water, as the temperature shock can rot the root system.

The Humidity Tray Trick

To raise the humidity around the plant without waterlogging the roots, place the pot on a tray filled with wet gravel or pebbles. As the water evaporates, it creates a moist microclimate around the foliage.

Critical Note: Ensure the bottom of the orchid pot sits firmly on top of the pebbles and is not submerged directly in the water, which causes root rot.

Step 3: Use a Dedicated Growing Medium & Transparent Pots

Because orchids gather moisture and nutrients from the air via aerial roots, standard potting soil will suffocate and kill them.

The Ideal Growing Medium

Your orchid requires a highly porous, free-draining medium. You can purchase a specialist orchid compost mix from a garden centre, which primarily consists of:

• Fir or Redwood Bark Chips: Provides the structural gaps your roots need to breathe.
• Coconut Husk Chips or Sphagnum Moss: Added optionally to retain just enough ambient moisture.

Why Clear Plastic Pots are Essential

Always grow Phalaenopsis orchids in transparent plastic pots. In nature, orchid roots are exposed to ambient daylight and actually perform photosynthesis. Clear pots allow light to reach the roots while giving you a perfect, unobstructed view to check root health and moisture levels.

Step 4: Feed Regularly to Fuel New Growth

In their natural habitats, nutrients are scarce, which is why orchids naturally grow at a slower pace. In the home, providing a supplemental diet is key to encouraging lush new leaves and strong flower buds.

• The Routine: Feed your orchid once a month with a specialist orchid fertilizer.
• Nitrates over Ammonia: Check the label of your fertilizer and select a formula that relies on nitrates rather than ammonia. Nitrates are significantly less toxic to sensitive orchid roots and are far more readily absorbed.
• The Best Time to Feed: Focus your feeding routine just after the blooming cycle has finished, rather than during peak flowering. This gives the plant the exact nutrient boost it needs to build up energy for its next growth spurt.

Step 5: Prune Correctly After Flowering

Once your orchid finishes blooming, you are left with a bare flower stem. Don’t simply hack it off at the base! You have two professional options to choose from depending on whether you want quick secondary flowers or a stronger, brand-new spike:

                  [Orchid Finishes Flowering]
                               |
            +------------------+------------------+
            |                                     |
    [The 4th Node Method]                [The Base-Cut Method]
            |                                     |
   Cut just above 4th node.             Clip stem 1 inch from base
   Triggers rapid, secondary            above the 1st node. Forces
   shoots from existing stem.           plant to rest & grow a strong,
                                         brand-new flower spike later.

1. The 4th Node Method (For Faster Blooms): Count upward from the base of the plant along the flower stem to find the notches (nodes). Using a pair of scissors sterilized with rubbing alcohol or a lighter flame, cut just above the fourth node. This frequently triggers a single or double secondary shoot to branch out from the existing stem.
2. The Base-Cut Method (For Stronger Spikes): Alternatively, clip the spent stem down to about 1 inch from its base, just above the very first growing node. This forces the orchid to enter a temporary rest period, allowing it to channel its energy into growing a completely fresh, robust new flower spike from the base later on.

Triggering the Rebloom

To shock a resting orchid back into flower production, introduce a night-to-day temperature variance of about 15 degrees. Dropping the room temperature down to around 15.5°C (60°F) at night and letting it warm back up to 23.9°C (75°F) during the day simulates the shifting tropical seasons, signaling the orchid to start pushing up new flower spikes. Lightly misting the leaves with warm water during this time can also encourage new spike formation.

Step-by-Step Orchid Repotting Guide

You should repot your orchid every 2 to 3 years. Over time, the bark chips will naturally break down and begin to compost, trapping dangerous amounts of moisture and suffocating the root network.

• The Best Time: Spring is the ideal season for repotting, as the plant enters a natural growth spurt and produces fresh leaves and roots.
• Pot Sizing: Orchids actually prefer to feel a little snug. Only upgrade to a larger pot if the roots are actively warping or distorting the sides of the current plastic container.

Repotting Steps:

1. Sterilize Your Tools: Wipe down a sharp knife or pair of pruning shears with rubbing alcohol, allowing it to evaporate completely before cutting.
2. Prep the Plant: Remove any completely spent, dead flower spikes by cutting them as close to the base as possible.
3. Loosen the Roots: Gently squeeze the sides of the plastic pot to break the grip of the roots. Firmly hold the base of the orchid plant and slide it out. Never pull the plant by its leaves.
4. Clean the Root Mass: Untangle the roots and shake away the old, decayed bark chips. If the pieces are stuck, rinse the root ball under a lukewarm tap to loosen the debris.
5. Trim Dead Wood: Identify healthy roots (which feel firm and look green, white, or yellow). Use your sterile blade to carefully snip away any mushy, hollow, or completely dried-out brown roots. You can trim overly long, healthy roots back to about 6 inches if necessary.
6. Situate the Plant: Place a 1-to-2-inch layer of fresh orchid bark at the bottom of a clean, transparent pot. Position the orchid inside, ensuring the base of the plant sits just above the rim of the pot (burying the crown leads to fatal rot).
7. Manage Aerial Roots: Leave any wild roots that were previously growing outside the pot in their original aerial position. They are adapted to open air and may rot if forced underground into the bark.
8. Pack the Medium: Gently fill the gaps around the roots with your new bark chips, tapping the sides of the pot frequently to help the pieces settle into place. Do not press down aggressively to avoid snapping the roots.
9. Finish & Heal: For structural integrity, support the heavy central stem with a clean stake and clip. Wait exactly 1 week before watering your newly repotted orchid. This intentional dry period gives any microscopic tears or damage on the roots time to heal cleanly without rotting.

Resources

I hope you have enjoyed our tutorial on how to look after orchids. Please feel free to link to this page or share and like it via social media.

Fact sheet on Phalaenopsis orchids or MissOrchidGirl:

Some varieties of orchids are considered to be family-friendly and non-toxic. For more information, please visit my post on non-toxic plants.