Summer is one of the busiest times in the garden. Flowers are blooming, vegetables are producing, and trees and shrubs are putting on new growth. To keep plants healthy through the heat, they need the right balance of water and nutrients. While fertilizing can encourage stronger growth and continuous blooms, applying the wrong product or applying it at the wrong time can do more harm than good.
Many gardeners worry about "burning" their plants during the summer. The good news is that fertilizer burn is preventable. By understanding what fertilizer your plants need, when to apply it, and how to use it properly, you can keep your garden healthy and thriving all season long.
Fertilizer burn occurs when plants receive more fertilizer than they can absorb. Most fertilizers contain salts that release nutrients into the soil. When too much fertilizer is applied, these salts draw moisture away from plant roots, causing dehydration and damage instead of healthy growth.
Common signs of fertilizer burn include:
- Brown or crispy leaf edges
- Yellowing leaves
- Wilting, even when the soil is moist
- Stunted growth
- White salt buildup on the soil surface
Although fertilizer burn can be alarming, it is often preventable with proper watering and correct application.
Why Do Plants Need Fertilizer During Summer?As plants continue to grow, flower, and produce fruit, they use nutrients stored in the soil. Over time, these nutrients become depleted, especially in containers, raised beds, and heavily planted gardens.
Fertilizing during the growing season helps:
- Support continuous flowering.
- Encourage healthy foliage.
- Improve vegetable production.
- Strengthen root development.
- Replace nutrients lost through watering and plant growth.
However, fertilizer works best when paired with proper watering. Plants that are drought-stressed or growing in dry soil are much more likely to experience fertilizer burn.
Not every plant has the same nutritional needs. Different plants require different fertilizers and feeding schedules.
Annual Flowers
Annuals bloom continuously throughout the season and benefit from regular feeding to encourage more flowers.
Perennials
Most perennials need less fertilizer than annuals. A light feeding in spring and occasional feeding during the growing season is often enough.
Vegetables
Vegetables are heavy feeders, especially tomatoes, peppers, cucumbers, squash, and other fruit-producing plants. Regular fertilizing helps support healthy harvests.
Trees and Shrubs
Established trees and shrubs generally require less frequent fertilizing than annual flowers or vegetables. If needed, slow-release fertilizers provide nutrients over a longer period.
Container Gardens
Plants grown in containers lose nutrients more quickly because watering flushes nutrients out of the soil. They often require more frequent feeding than plants growing in the ground.
Timing is one of the most important factors in preventing fertilizer burn.
The best time to fertilize is:
- Early in the morning
- Later in the evening
- After watering if the soil is dry
- During cooler temperatures
Avoid fertilizing during the hottest part of the day, as heat and dry soil increase the risk of stressing plants.
Always read the fertilizer label for recommended application timing and frequency.
Where Should Fertilizer Be Applied?
Fertilizer should be applied where plant roots can easily absorb nutrients.
For most plants:
- Spread granular fertilizer around the drip line, not directly against the stem.
- Water-soluble fertilizers should be applied evenly around the root zone.
- Avoid leaving fertilizer on leaves unless the product is specifically designed for foliar feeding.
Watering after applying granular fertilizer helps move nutrients into the soil where roots can access them.
How Can You Feed Plants Without Burning Them?
Following a few simple steps can help your plants benefit from fertilizer without causing damage.
Choose the Right Fertilizer
Different plants have different nutritional needs.
- Flowering plants often benefit from fertilizers that encourage blooms.
- Vegetables require balanced nutrients to support healthy growth and harvests.
- Trees and shrubs often perform well with slow-release fertilizers.
- Containers may benefit from water-soluble fertilizers because nutrients are quickly washed out with regular watering.
Choosing a fertilizer designed for the type of plant you're growing helps deliver the nutrients it needs.
Water Before Fertilizing
Never apply fertilizer to extremely dry soil. Moist soil helps roots absorb nutrients safely and reduces the risk of fertilizer burn.
Follow the Recommended Rate
Applying more fertilizer will not make plants grow faster. In fact, too much fertilizer can damage roots and slow plant growth.
Always measure carefully and follow the directions on the package.
Water After Applying Granular Fertilizer
Watering after application helps dissolve the fertilizer and carry nutrients into the soil where plant roots can access them.
Monitor Your Plants
Healthy green growth, strong stems, and continuous blooms are signs that your fertilizing routine is working. If plants begin showing signs of stress, reassess your watering schedule and fertilizer application.
Common Mistakes to Avoid
Many fertilizer problems are easy to prevent.
Avoid:
- Fertilizing dry soil.
- Applying fertilizer during extreme heat.
- Using more fertilizer than recommended.
- Choosing the wrong fertilizer for your plants.
- Forgetting to water after applying granular fertilizer.
- Assuming every plant needs frequent feeding.
Healthy plants grow from consistency, not excess.
Conclusion
Fertilizer plays an important role in helping gardens thrive, but using it correctly is just as important as choosing the right product. By understanding your plants' needs, watering properly, and applying fertilizer at the right time, you can encourage healthy growth without risking fertilizer burn.
Whether you're growing colourful annuals, productive vegetable gardens, or established trees and shrubs, thoughtful fertilizing will help keep your landscape healthy throughout the summer.
Not sure which fertilizer is right for your garden? Visit Ritchie Feed & Seed for a wide selection of fertilizers, soil amendments, watering supplies, and gardening essentials. https://www.ritchiefeed.com/
