Why You Should Never Ignore a Spider Plant With Brown Leaf Tips in Fall

If your spider plant has brown leaf tips this fall, you should take action, fast. Brown leaf tips on a spider plant are like the warning lights on your car dashboard: they alert you to a problem that, if you don’t do something about it, is likely to get far worse. In fall, dying leaf tips are a common houseplant complaint, but it’s vital to work out what the problem behind this symptom is so you can set it right and bring your Chlorophytum comosum back to full health.

Don’t worry, though. A spider plant with brown leaf tips is easily fixed if you act soon enough, so great work getting here to Garden ER where you'll find straightforward solutions to treat this season’s biggest planty problems. The localized damage you see as brown leaf tips on a spider plant isn’t life-threatening in its own right, but it could be pointing to a problem that is potentially fatal. So, taking swift action if you spot browning leaf tips is an important part of fall houseplant care.

Come on in and let’s diagnose and treat your poorly spider plant with browning leaves.

Triage: Let’s Look at Those Brown Leaf Tips

First off, take a closer look at your spider plant’s dead leaf tips. Is there a clean, sharp line between the brown and the green leaf parts, or can you see a thin yellow section between them? Is the browning just at the tip of the leaves or are there any dark patches near the center or base of those leaves? Do the brown areas feel dry or mushy to the touch, and is the discoloration a dull greyish, blackish brown or a warmer, redder brown? The answers to these questions will help to inform your diagnosis.

Diagnosis: What’s Causing the Brown Leaf Tips?

In fall, there are four likely culprits behind a spider plant's browning leaves, and your foliage examination will help you work out which it is. Remember, your houseplant may be stressed by more than one issue so may show more than one type of damage.

1. Dry, Heated Air

Turning on a home’s heating system in fall is a common reason why spider leaf tips turn brown in fall. This is the likely cause if the damaged foliage feels dry and crispy, and there’s a sharp line between the green parts and the discolored leaf tips, or a very narrow, clean yellow line separating them. When the heat gets turned on, the air in your home rapidly loses its humidity and in these drier conditions, moisture can evaporate from a spider plant’s leaves faster than roots can replace it. As a spider plant primarily loses most moisture from its leaf tips, that's where the damage shows first.

2. Over-Watering

When days start to shorten, spider plants dramatically slow their growth rate, so need to drink far less water. If you haven’t adjusted your watering routine to suit, the plant is likely getting more water than it can use. Roots are likely stressed as they’re sitting in wet, soggy soil, and this damage shows up as yellowing leaves and a blurry-edged yellow halo-like zone separating the green and brown leaf parts. This damage can appear anywhere on the leaf and, if the patches feel mushy and extend into the center or base of the leaf then those houseplant roots have started to rot.

3. Chilled Leaves

Spider plants hail from tropical climates so if yours is sitting on a windowsill or near an external door where it's regularly blasted by cold air, it will likely struggle as temperatures drop outdoors. If this is the problem, then leaves will become floppy, dull and pale, and any foliage that’s touching a glass window pane will rapidly turn brown or black, often overnight, and feel soft and limp.

4. Chemicals in Tap Water

Spider plants are tough houseplants but they don’t cope well with tap water that’s high in fluoride and chlorine. And while this is a year-round problem, when a spider plant is dealing with fall-induced environmental stress on top of this chemical stress, the issue can quickly become obvious.

Spider plants pull water – and any fluoride and chlorine in it – to their leaf tips, where much of the water evaporates, leaving a concentration of chemicals. This causes browning that starts at the very tip of the leaf and creeps down the outside edges. A distinctive reddish-brown tint is another diagnostic clue to tap-water chemicals being the cause. The discoloration on the outer, older leaves will be worse than on the inner, younger leaves which haven't been sucking up the chemicals for as long. Brown leaf tips will feel dry and crispy, you may see a narrow yellow line between the green and brown parts, and there might be a crusty white residue on the soil or inner rim of the pot.

Treatment: Nurse Your Spider Plant Back to Health

All these problems are easily fixed with the right spider plant care.

If Dry, Heated Air is the Cause

Check your spider plant isn’t sitting too close to a radiator, heat vent or in a current of warm air. Moving it to a more humid room such as a bathroom will help it recover, or stand the pot on a shallow tray of water and pebbles such as this Bonsai Humidity Tray from Lowe’s, or make your own with an old plant saucer and pea gravel like this Landscape Rock from Walmart. Make sure the pot base sits on top of the pebbles rather than in the water – you’re simply using the water to humidify the air as it evaporates.

If Over-Watering is the Cause

Stop watering immediately, let the soil dry out and only water when the top inch of potting mix feels dry, or take out the guesswork with a moisture meter like this from Amazon.

If you suspect root rot, slide the pot off and if there’s a foul, stagnant smell, however faint, you’ll need to take action to save your plant. Remove as much soil as possible and use sharp pruners or scissors to snip off any rotting roots that are dark in color, mushy or slimy. Rinse the roots and wash the pot, then repot your spider plant with a fast-draining potting mix like Back to the Roots Organic Succulents & Cacti Mix, available from The Home Depot.

If Chilled Leaves are the Cause

Move your plant to a spot with bright but indirect sunlight – a room with an east- or west-facing window is ideal.

If Tap Water is the Cause

Switch to using harvested rainwater or distilled water. Don’t use regular filtered water because while a filter removes chlorine, fluoride slips right through. A gallon jug of distilled water costs just over a dollar from Walmart and will keep your spider plant watered for 3 months, and rainwater is even cheaper! It’s also a wise idea to repot your spider plant into fresh potting soil to remove any build-up of chemicals sitting around the roots, or flush or leach the existing soil by pouring rain- or distilled water through.

Patient Notes

Trim damaged leaf tips with sharp scissors, cutting at an angle to mimic the pointed shape of the foliage.

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