Most likely cause
Fluoride and chlorine in tap water are the leading cause of brown tips on a Dracaena. Few common houseplants are as sensitive to these chemicals, and because the plant moves water and dissolved minerals out to the leaf tips, that is where fluoride concentrates and scorches the tissue brown.
You can confirm it by the pattern. The browning is confined to the very tips and outer edges, often with a thin yellow band between the brown and the green, and it shows up across many leaves rather than one. If you water straight from the tap, especially fluoridated municipal water, this is almost certainly the driver. Switch to filtered, distilled, or rainwater, or let tap water sit out overnight so chlorine can dissipate, and new leaves will emerge clean.
Other causes
These rank below water quality but often stack on top of it.
- Salt buildup. Over-fertilizing or hard water leaves a white crust on the soil and burns the tips; flushing the soil reveals the cause.
- Low humidity. Dry indoor air below 40 percent, especially near winter heating, crisps the thin leaf ends while the rest stays green.
- Inconsistent watering. Swinging between bone-dry and soggy soil stresses the roots and shows as browning tips on otherwise healthy leaves.
- Underwatering. Prolonged dryness with a light pot and dry soil dries the tips and edges before the rest of the leaf.
How to fix it
- Change your water. Switch to filtered, distilled, or rainwater, or leave tap water out overnight so chlorine dissipates before you use it.
- Flush the soil. Every few months, run low-mineral water through the pot until it drains freely to wash out fluoride and fertilizer salts.
- Feed sparingly. Use a balanced fertilizer at quarter to half strength during the growing season only, since Dracaenas are light feeders.
- Raise the humidity. Aim for 40 to 50 percent with a humidifier, a pebble tray, or by grouping plants together.
- Water consistently. Water once the top inch or two of soil is dry, then let it drain fully so the roots never sit wet or bone dry.
- Trim the tips. Once the cause is fixed, trim the brown tips with clean scissors along the leaf's natural point, leaving a sliver of brown.
| Cause | Tell-tale sign | Fix |
|---|---|---|
| Fluoride or chlorine | Tip burn with yellow band, many leaves | Use filtered or distilled water |
| Salt buildup | White crust on soil, tip burn | Flush soil, feed at quarter strength |
| Low humidity | Crispy tips, green leaf, dry air | Raise humidity to 40 to 50 percent |
| Inconsistent watering | Tips brown, soil swings wet to dry | Water steadily once top inch dries |
| Underwatering | Light pot, dry soil, dry tips | Water thoroughly, keep consistent |