The Ultimate Beginner’s Guide to Cactus Care

A simple, clear, beginner-friendly guide to growing healthy cacti.

A tall saguaro cactus in a desert landscape with dry shrubs and mountains in the background under a clear blue sky.

Table Of Contents

Most cacti thrive in bright, indirect light or morning sunlight. South- or east-facing windows are ideal for indoor collectors.

Signs your cactus needs more light:

  • Leaning toward the window

  • Pale, stretched growth (etiolation)

  • Slower growth than normal

If your home doesn’t get strong light, a grow light can help keep your plants compact and healthy.

See Our Full Light Requirements Guide Here

Personal Story Here

A desert scene with a Joshua tree in the foreground, setting sun behind the tree, rocky hills in the background, and dry desert vegetation.

Watering Basics

Cacti don’t like soggy roots. As a beginner rule:

Water only when the soil is completely dry.

During active growing seasons (spring and summer), that might be:

  • Every 7–14 days indoors

  • Every 5–10 days outdoors, depending on heat

During fall and winter:

  • Water once every 3–6 weeks

  • Some species almost stop drinking entirely

A garden sprinkler watering green plants with water droplets spraying out.

Best Soil For Cacti

Cacti need a fast-draining soil mix. Avoid regular potting soil — it holds too much moisture.

A good cactus mix includes:

  • Cactus/succulent soil

  • Pumice, perlite, or coarse sand

  • Optional: small bark or lava rock

Your soil should feel gritty, airy, and able to dry quickly between waterings.

A small green cactus with white spines in a round terracotta pot filled with dark soil.

Choosing the Right Pot

Cacti need a fast-draining soil mix. Best pot types:

  • Terracotta (top choice for beginners)

  • Unglazed clay

  • Plastic pots with many drainage holes

Make sure every pot has:

  • A drainage hole

  • Enough room around the roots (but not too much)

Multiple small cacti in orange pots arranged on a grey wooden surface, with some pots tagged.
Hand holding a black plastic flower pot with other stacked flower pots in the background.

Beginner Mistakes to Avoid

❌ Overwatering

The #1 cause of cactus problems.

Using the wrong soil

Heavy, compact soil causes rot.

Too little light

This leads to stretched, weak growth.

Potting in oversized containers

This keeps soil wet too long.

Typically, we believe that our cacti will not grow larger if the pot is not large to give the roots room to expand. The reason this is wrong when it comes to cacti is because the larger the pot, the more soil is in the pot, the more soil, the more water is retained for longer periods, this can cause root rot.

BONUS TIP: Try to limit your pot size to 1 - 2 inches outside of the base of the plant and deep enough that the roots are not crammed.

Your Simple Care Routine

Check soil moisture weekly

  1. Rotate plants every 2–3 weeks for even growth

  2. Increase light slowly

  3. Reduce watering in winter

  4. Repot when roots fill the pot

  5. Remember the pleasure in process not the result

A man wearing a beige cap, gray jacket, and glasses is shopping for potted cacti at a plant store. He is leaning over a trolley, inspecting the plants, surrounded by various green plants and foliage.

Learn More About Cacti

View Our Cacti Education Hub If You Are Looking For:

  1. More Specific Beginners Guides

  2. Specific Species Guides

  3. Care Tips to Improve Growth

Visit Education Hub

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Assorted potted cacti in a greenhouse or plant shop, featuring various shapes and sizes of desert succulents.