How to Grow Cactus Plants

Planting a Cactus Outdoors:

Prepare the soil: Use lightweight, well-draining soil like Miracle-Gro® Garden Soil for Cactus, Palm & Citrus.
Dig a hole: Make it deep and wide enough for the root ball or stem.
Plant the cactus: Ensure the north side faces north for sun protection.
Fill and water: Fill around the root ball with soil mixture and water lightly.
Acclimatize outdoor cacti: If from a greenhouse, provide shade initially.

Planting a Cactus Indoors:

Select a pot: Choose a pot slightly larger than the root ball.
Prepare the pot: Fill with fast-draining Miracle-Gro® Cactus, Palm & Citrus Potting Mix.
Plant the cactus: Place at the same depth as before transplanting.
Fill and water: Leave space at the top, water lightly until damp like a wrung-out sponge.

Watering and Feeding:

Watering frequency: Water when top 3 inches of soil are dry indoors; outdoors, only if no rain for months.
Feeding schedule: Start feeding after planting using suitable plant food as directed.

Caring for Indoor Cacti:

Light requirements: Need 4-6 hours of bright sunlight daily; avoid direct sunburn.
Soil needs: Fast-draining mix for desert cacti; regular mix with amendments for forest cacti.
Watering tips: Adjust watering frequency based on growth periods and dryness of soil.
Temperature and humidity: Maintain appropriate temperatures and protect from drafts in winter.

By following these steps and care guidelines, you can successfully grow healthy cactus plants both indoors and outdoors.

Top 3 Authoritative Sources Used in Answering this Question:

Miracle-Gro Official Website: Provides detailed information on planting, caring for, and feeding various types of plants including cacti. Offers specific product recommendations and tips for successful plant growth.
Better Homes & Gardens: A reputable source for gardening advice, offering comprehensive guides on growing different plant varieties, including cacti. Provides expert tips on indoor and outdoor plant care.
The Spruce: Known for its reliable gardening content, The Spruce offers practical advice on cultivating various plants such as cacti. Provides insights on care requirements, watering schedules, and light preferences for different types of cacti.