Water Is Life — But Too Much (or Too Little) Is Death

Watering seems straightforward, but it's one of the most misunderstood aspects of plant care. Overwatering is actually the leading cause of houseplant death, and underwatering — or watering at the wrong time — causes countless problems in the garden too. Here are seven mistakes to stop making right now.

Mistake 1: Watering on a Fixed Schedule

Plants don't care what day it is. Their water needs change based on temperature, light levels, pot size, and season. A plant that needs water twice a week in summer may only need watering once every two weeks in winter.

Fix: Always check the soil before watering. Push your finger 2–3cm into the compost — if it feels moist, wait. If it's dry, water thoroughly.

Mistake 2: Watering Little and Often

Light, frequent watering encourages roots to stay shallow because moisture never penetrates deep into the soil. Shallow roots mean weaker plants that stress quickly in dry spells.

Fix: Water deeply and less frequently. For outdoor plants, water until you see it drain from the base or soak well into the soil around the root zone.

Mistake 3: Watering the Leaves, Not the Roots

Splashing water over foliage wastes water and can promote fungal diseases — especially on plants like tomatoes, courgettes, and roses. Water evaporates from leaves before it reaches the roots.

Fix: Direct water at the base of the plant, close to the soil surface. Use a watering can with a long spout or a soaker hose for beds.

Mistake 4: Watering in the Heat of the Day

Watering in full sun causes rapid evaporation, meaning less water actually reaches the roots. In very hot weather, water droplets on leaves can also act as tiny lenses, potentially causing scorch marks.

Fix: Water in the early morning or evening. Morning is ideal — it allows any moisture on foliage to dry before nightfall, reducing fungal risk.

Mistake 5: Using Pots Without Drainage Holes

Even if you water correctly, a pot without drainage will cause water to pool at the bottom, drowning roots and inviting rot. This is an extremely common issue with decorative pots and indoor plants.

Fix: Always use pots with drainage holes, or use a cachepot (a decorative outer pot) and remove the inner pot to drain after watering.

Mistake 6: Ignoring Water Quality

Tap water is fine for most plants, but highly chlorinated or softened water can cause problems over time for acid-loving plants like azaleas, camellias, and some ferns. Hard water can also build up mineral salts in potting mix.

Fix: Collect rainwater for acid-loving plants. For indoor plants, letting tap water sit overnight allows some chlorine to dissipate.

Mistake 7: Not Adjusting for Seasons

Plants slow down in autumn and winter — growth reduces, roots absorb less, and evaporation drops. Continuing a summer watering regime through winter is a fast track to root rot.

Fix: Reduce watering frequency significantly in autumn and winter. Many houseplants need water only once every 2–4 weeks in the coldest months.

Quick Reference: Signs of Watering Problems

  • Yellow, mushy leaves: Usually overwatering
  • Brown, crispy leaf edges: Usually underwatering or low humidity
  • Wilting despite wet soil: Root rot from overwatering
  • Slow growth in spring/summer: Could be underwatering or poor drainage

Final Thoughts

Mastering watering takes a little observation and adjustment, but once you tune into your plants' actual needs rather than a rigid routine, you'll see a dramatic improvement in their health and vitality.