Transform your space with Sydney's premier indoor and outdoor plant hire service, trusted by over 400 businesses for over 30 years!

Caring for Indoor Plants: A Comprehensive Guide

Caring for potted Indoor Plants


Indoor plants not only bring a touch of nature to our living spaces but also improve air quality and elevate mood. Understanding plant care basics ensures that these green companions flourish, providing us with their maximum benefits. The balance between aesthetics and plant health is a delicate dance, one that is informed by nature itself.

Understanding Your Plant’s Natural Habitat

Every houseplant we bring into our homes originates from a specific environment, each with unique light, water, and nutrient needs. It’s essential to know and replicate these conditions for your plants to thrive.

Origins of Common Houseplants and Their Natural Conditions

PlantOriginNatural Conditions
Snake PlantWest African tropicsLow light, dry soil
PothosSolomon IslandsDappled light, high humidity
Fiddle Leaf FigWestern AfricaBright, filtered light, warm
ZZ PlantEastern AfricaLow light, dry conditions

Watering Indoor Plants

The lifeline of every plant, water is as much a friend as it can be a foe. Over-watering is a common mistake, but with knowledge, you can strike the right balance.

watering indoor plants

How often should I water my indoor plants?

Factors Affecting Watering Frequency

  • Pot Type: Terracotta pots absorb moisture, requiring more frequent watering, while plastic pots retain moisture.
  • Soil Mixture: Well-draining soil dries out faster than denser mixes.
  • Plant Species: Succulents need less frequent watering than tropical plants.
  • Room Conditions: Plants in a humid room need less water than those in drier conditions.

Signs of Over-watering and Under-watering

  • Over-watering: Yellowing leaves, moldy soil, drooping plant.
  • Under-watering: Dry, brittle leaves, drooping plant, dry soil.

Fertilizing Your Green Companions

While water is essential, plants also need various nutrients to grow, produce flowers, or bear fruit. Fertilizers provide these nutrients, making them vital for plant health.

How to fertilize indoor plants

What’s the best way to fertilize indoor plants?

  • Decoding Fertilizer Numbers: These numbers represent the percentage of nitrogen (N), phosphorus (P), and potassium (K) in the fertilizer. For instance, a 10-20-10 fertilizer contains 10% nitrogen, 20% phosphorus, and 10% potassium.
  • Organic vs. Synthetic Fertilizers
OrganicSlow-release, improves soil healthMight not provide instant results
SyntheticQuick results, exact nutrient ratioCan harm the environment, might burn plants if overused
  • Seasonal Fertilization Considerations: Most indoor plants benefit from fertilizing in the growing season (spring and summer) and require little to no fertilization in the dormant season (fall and winter).

Addressing Common Leaf Problems

The leaves often tell a story about the plant’s health. From color changes to unexpected drop-offs, understanding these signs is essential for effective plant care.

Why are the leaves on my plant turning yellow?

  • Root Rot: If over-watered, plant roots can rot, causing the leaves to turn yellow. This is often accompanied by a moldy soil smell.
  • Pests: Pests such as spider mites and aphids can cause yellowing leaves. Check the undersides of leaves for tiny bugs.
  • Nutrient Deficiencies: Lack of essential nutrients can lead to yellow leaves. If watering practices are good and there’s no sign of pests, consider changing the soil or fertilizing.

Nutrient Deficient plant

The Right Amount of Light: It Makes All the Difference

One of the essential aspects of plant care is ensuring your indoor plants get the correct amount of light. Light is the energy source that powers photosynthesis, the process by which plants create their food.

How to determine the light needs of my plant?

  • Reading the Plant Tag: Most plants come with a tag that provides care instructions, including light requirements. “Low light” doesn’t mean no light, just less direct light. Similarly, “high light” doesn’t always mean direct sunlight.
  • Observing the Plant: A plant stretching towards the light might need more of it. Conversely, a plant with leaves that are fading or getting burned might be getting too much light.

Types of Indoor Lighting for Plants

  • Natural Light: Sources include windows and skylights. Consider the direction your window faces; north-facing windows receive less direct sunlight than south-facing ones.
  • Artificial Light: LED grow lights, fluorescent lights, and incandescent lights can supplement or replace natural light.

Repotting: When and How

As plants grow, they can become too big for their pots, causing them to become “root-bound” or “pot-bound”. Repotting helps ensure they have room to grow and fresh soil to thrive in.

When is it time to repot my indoor plant?

  • Roots Emerging from the Bottom: If you see roots coming out of the drainage holes, it’s a sign.
  • Growth Stagnation: If the plant hasn’t grown in a while, it might be pot-bound.
  • Overly Dry Soil: If the soil dries out quickly after watering, it could be due to overcrowded roots.

Steps to Repotting:

  1. Choose the Right Pot: It should be 1-2 inches larger in diameter than the current pot.
  2. Prepare the New Pot: Add fresh potting soil to the bottom.
  3. Remove the Plant: Tip the old pot, tap its sides, and gently pull the plant out.
  4. Position and Fill: Place the plant in the new pot and fill around it with soil, pressing down gently.
  5. Water: Give your freshly potted plant a good drink.

Handling Pests and Diseases

A thriving indoor garden can sometimes attract unwanted visitors. Here’s how to spot them and deal with them.

Common Indoor Plant Pests and How to Address Them:

  • Spider Mites: Tiny bugs that create a fine webbing. Wipe leaves with soapy water or use an insecticidal soap.
  • Aphids: Small green or black bugs typically found on the underside of leaves. A strong stream of water or neem oil can help.
  • Mealybugs: White, cottony bugs. Use alcohol on a cotton swab to remove them.

Signs of Diseases and Solutions:

  • Powdery Mildew: A white powdery substance on leaves. Improve air circulation and reduce humidity.
  • Root Rot: Yellowing leaves and moldy soil smell. Repot the plant, trimming rotted roots, and ensure proper drainage.