06/02/2026
June is the time when many Idaho gardens shift from planting season into rapid growth — which means your plants may benefit from a mid-season nutrient boost. But according to research-based recommendations from University of Idaho Extension, more fertilizer is not always better.
✅ Fertilize only when plants need it
✅ Water deeply after applying fertilizer
✅ Avoid over-fertilizing tomatoes — too much nitrogen creates leafy plants with fewer fruits
✅ Lawns and gardens grow best when fertilizer is applied based on soil needs, not guesswork
🌿 Vegetables like corn, squash, cucumbers, and leafy greens are heavy feeders and often benefit from side-dressing fertilizer in early June.
🌸 Flower gardens benefit from balanced slow-release fertilizer to encourage healthy blooms throughout summer.
💡 Research-based tip: Applying fertilizer during cooler morning temperatures and watering afterward helps reduce nutrient loss and plant stress.
Want to know exactly what your soil needs? A soil test is the best first step for productive gardens and healthy plants.
