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Growing Peppers in the Garden: Preparation and Planting Guide

Lush green pepper plants growing in a row in a healthy vegetable garden

Dreaming of harvesting sweet peppers and spicy chilies? In our Canadian climate, heat and sun are essential for success. Whether you have a dedicated vegetable patch or want to tuck them into your ornamental flower beds, here is how to maximize your garden's yield.

Preparation: Planning, Feeding, and Warming the Soil

Vigorous pepper plants start with careful preparation. Begin these steps about two weeks before your planned planting date:

  • Plan your rotation: Choose a spot where no Solanaceous crops (tomatoes, potatoes, or eggplants) have grown in the last three years to prevent soil-borne diseases.
  • Amend and loosen: Work the soil to a depth of 20 to 30 cm. Mix in 1.5 to 2 cm of quality compost. Avoid high-nitrogen fertilizers at this stage, as they promote leafy growth instead of fruit.
  • Warm up the ground: Once the soil is prepped, lay down a black plastic film over your planting row to absorb solar energy. Important: Remove this film just before planting to allow the soil to breathe.

Close-up of a gardener planting a young pepper seedling into rich garden soil

Steps for Successful Planting

  1. Check the Weather: Wait until night temperatures consistently stay above 12°C.
  2. Planting depth: Dig a hole slightly wider than the root ball. Plant so that the base of the stem (the crown) is level with the soil surface.
  3. Apply a Transplant Fertilizer: Use a transplant fertilizer rich in phosphorus when planting to stimulate deep root development and reduce transplant shock.
  4. Proper Spacing: Space plants 30 to 60 cm apart to ensure healthy airflow.
  5. Provide Support: Stake taller varieties immediately with a tomato cage or sturdy stake to protect them from wind and heavy rain.
  6. Initial Watering: Water thoroughly at the base of each plant right after planting.
  7. Mulch the Soil: After removing the plastic film and planting, apply straw or organic mulch to retain moisture and keep the roots cool.

Black plastic film laid over garden rows to warm the soil before planting peppers

Pro Tips for a Bountiful Harvest

  • Pinching: To encourage a bushier plant and more fruit, pinch off the top of the main stem when the plant is about 20 cm tall. This promotes branching.
  • Attract Pollinators: Plant flowers like Alyssum or Calendula nearby to attract essential pollinators to your pepper flowers.
  • Nighttime Protection: Keep a floating row cover handy. If a night unexpectedly drops below 10°C, cover your plants to prevent growth-stalling cold shock.

To keep your garden thriving all season, discover our expert tips on caring for pepper plants. Working with a small space? See our guide on container gardening.

Ready to prep your garden? Visit your local Botanix garden centre to find your straw mulch, transplant fertilizer, and all your gardening supplies!