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Most houseplants die from two fixable problems: too little light for the species you bought, and too much water. Get those two right, add a container that drains, and you can keep common tropical and flowering indoor plants alive with a simple routine. This guide covers light matching, watering by soil check, potting mix and repotting, humidity and feeding, and how to read the symptoms — yellow leaves, brown tips, pests, root rot — that tell you what to change.

Match the plant to the light in the room

Light is the variable you can't fake. Before buying, watch how a spot behaves through the day: does direct sun hit the leaves, is it bright but never sunny, or is it a dim corner?

• Bright, indirect light (near a window, no direct sun on leaves): the safe default for most foliage houseplants.
• Direct sun (sunlight actually strikes the plant): needed by many flowering and succulent-type plants, but it will scorch shade-lovers.
• Low light (away from windows, or a north-facing spot): only a limited group of plants tolerate this, and even they usually grow slowly rather than thrive.

Signs of too much light: bleached, washed-out patches, crisp brown scorch marks on leaf surfaces facing the window, leaves that look faded rather than green.

Signs of too little light: stretched, spindly growth with long gaps between leaves, small new leaves, a plant that leans hard toward the window, and variegated leaves reverting to plain green.

If you can't move the plant, move the light — a sheer curtain softens direct sun, and rotating the pot a quarter turn each week keeps growth even.

Water correctly: check the soil, not the calendar

Overwatering is the most common way houseplants die, and it usually looks like underwatering — wilted, yellowing leaves — which is why people water more and make it worse. The fix is to check moisture before every watering instead of following a schedule.

A workable routine:

1. Test the soil. Push a finger about 2–3 cm (1 inch) into the mix. If it feels damp, wait. If it feels dry at that depth, water.
2. Water thoroughly. Pour until water runs out of the drainage holes, so the whole root ball gets wet rather than just the top.
3. Empty the saucer. Never let the pot stand in the water that collected — that's how root rot starts.
4. Adjust by season. Growth slows in winter, so most plants need much less water then; in active growth they drink faster.

Two rules of thumb worth remembering: a small pot in bright light dries out faster than a large pot in shade, and a plant in a plastic pot holds moisture longer than the same plant in unglazed terracotta.

Potting mix, drainage, and when to repot

Use a potting mix made for containers, not garden soil — garden soil compacts in a pot and suffocates roots. Most houseplant mixes are light and airy; succulents and cacti want a grittier, faster-draining version.

The container matters as much as the mix:

• Drainage holes are non-negotiable. A decorative pot with no holes works only as a cachepot holding a smaller potted plant inside.
• Size up gradually. Move to a pot only about 2–5 cm (1–2 inches) wider. A pot that's far too big holds excess wet soil around the roots and invites rot.

Repot when roots circle the inside of the pot, grow out of the drainage holes, or the plant dries out within a day or two of watering. Spring, just as growth restarts, is the least stressful time. After repotting, water and keep the plant out of harsh direct sun for a week or so while it settles.

Humidity, temperature, and feeding

Tropical houseplants come from humid places, and indoor air — especially in winter with heating on — is much drier. Group plants together to raise local humidity, or set pots on a tray of pebbles with water below the pot base. Misting gives only a brief bump and can encourage leaf spots if foliage stays wet.

Temperature: most houseplants are comfortable in the same range you are, roughly 18–24°C (65–75°F). Keep them away from cold drafts, hot radiators, and the temperature swings right beside a window at night.

Feeding: plants in active growth benefit from a balanced houseplant fertilizer at the dilution on the label, typically every few weeks through spring and summer. Stop or cut back in winter when growth stalls. More fertilizer is not better — overfeeding causes salt buildup and burned leaf edges.

Diagnose common problems

When you spot a problem, change one thing at a time and give the plant a couple of weeks to respond — that way you learn what actually helped.

A simple weekly routine

Once the setup is right, maintenance is short: check soil moisture and water only the plants that need it, rotate pots a quarter turn, look at the undersides of leaves for pests, and remove dead or yellowing foliage. Repot in spring when roots demand it, feed during active growth, and ease off water and fertilizer in winter.

If you start with light and watering and get those two right, most other houseplant problems either don't appear or are easy to correct.