What is the best time to fertilize your hedges?

Fertilizing hedges is an essential step to ensure their optimal growth and health. Whether you have a cedar hedge or other types of hedges, understanding fertilization methods can transform your garden into a lush space! In this article, we explain why fertilizing hedges is important, what the different application methods are, and why it is often best to leave this task to professionals.

Why is fertilizing hedges important?

Fertilizing hedges ensures they have healthy and vigorous growth. The nutrients present in fertilizers are essential for the development of roots, leaves, and branches. A well-fertilized hedge can withstand harsh weather conditions, diseases, and weeds. Additionally, proper fertilization improves the appearance of your hedge, making it denser and greener.

What are the consequences of nutrient deficiency?

Nutrient deficiency can result in slow growth, sparse foliage, and low resistance to diseases and weather conditions. Hedges suffering from deficiencies may show visible signs such as yellowing leaves or weak new growth. To avoid these issues, it is essential to provide your hedges with the necessary nutrients.

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When to fertilize your hedges?

What is the ideal period for hedge fertilization?

The ideal period for fertilizing your hedges varies depending on the type of hedge and local climatic conditions. Generally, it is recommended to fertilize in spring, when plants emerge from their dormant period. For cedar hedges, a second application may be done in late summer, in September, to boost growth before winter.

Why avoid fertilization during freezing periods?

It is important to avoid fertilization during freezing periods or just before winter. Nutrients cannot be efficiently absorbed by frozen roots, and late fertilization can stimulate growth that will not survive cold winds and frost.

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Benefits of hedge fertilization

  • Rapid and vigorous growth: Promotes root and leaf development, ensuring a dense and verdant hedge.
  • Improved plant health: Provides necessary nutrients for increased resistance to diseases and pests.
  • Aesthetic yield: Ensures a beautiful appearance, with uniform and beautiful-colored foliage, especially for cedar hedges.
  • Preparation for weather conditions: Strengthens hedges to better withstand harsh weather conditions, such as cold temperatures and winter frost.
  • Better flowering: Encourages flowering of flowering hedges, improving visual appeal and garden biodiversity.
  • Reduction of nutrient deficiencies: Prevents deficiencies such as nitrogen deficiency, which can cause leaf yellowing and slow growth.
  • Increased resistance to environmental stress: Helps hedges better tolerate drought periods and harsh winters.
  • Production of new growth: Stimulates the production of new shoots, ensuring a thick and full hedge.
  • Root strengthening: Improves root development, allowing hedges to better absorb water and nutrients.
  • Weed reduction: A well-nourished hedge is denser and helps reduce the presence of surrounding weeds.
  • Longevity enhancement: Extends hedge life by maintaining their health and vigor through regular fertilizer inputs.
  • Optimization of watering: Fertilized hedges benefit from better deep watering, thanks to their stronger and more absorbent roots. This enhances the beneficial effects of water.
  • Adaptability to different soil types: Improves hedge tolerance to various soil types, allowing uniform growth.
  • Promotes height growth: Fertilized hedges can achieve height growth more quickly, offering more privacy and protection.

By regularly fertilizing your hedges, you not only ensure their beauty and health but also optimize their ability to withstand environmental challenges.

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How much fertilizer to use?

The amount of fertilizer to apply depends on the type of hedge, its size, and the soil type. It is essential to accurately calculate the amount of fertilizer needed to avoid over-fertilization, which can damage plants. A general rule is to follow the fertilizer manufacturer’s instructions. It is recommended to consult a professional for precise advice.

Which application method is best?

For effective application, it is recommended to use granular fertilizer or slow-release fertilizer. Spread the fertilizer evenly at the base of the hedges, ensuring it is well incorporated into the soil. Deep watering after application helps distribute nutrients to the roots.

Why is it better to leave hedge fertilization to lawn maintenance experts?

Professionals have the expertise and experience to determine the appropriate fertilizer dosage, the type of fertilizer to use, and the optimal time for application. They can also assess the specific care required for your hedges and adapt methods based on local climatic conditions.

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What types of fertilizer to use?

  • Mineral fertilizers vs. organic fertilizers: Mineral fertilizers provide quickly accessible nutrients for plants, which is ideal for rapid growth. Organic fertilizers, on the other hand, improve soil structure in the long term and promote root growth.
  • Fertilizers for trees and hedges: For hedges, use nitrogen-rich fertilizers to promote height growth and thickening of foliage. Tree fertilizers can also be beneficial for hedges, as they contain nutrients suitable for the growth of large woody plants.

How to maintain your hedges after fertilization

The importance of watering

Deep watering is crucial after fertilization to ensure that the necessary nutrients reach the roots. Use a hose or perforated watering system for uniform water distribution. During dry periods, small regular waterings may be necessary to maintain soil moisture.

Annual hedge trimming

Annual trimming is an essential step to maintain the shape and health of hedges. It promotes plant growth by removing dead or diseased branches and stimulating new growth. It is advisable to trim hedges after the flowering period to avoid cutting new shoots.

Winter protection

Protecting hedges from harsh winters is important for their survival. Use snow fences or blankets to shield roots and branches from heavy snow and de-icing salt. Proper winter protection reduces the risk of damage and promotes vigorous regrowth in spring.

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How to recognize signs of deficiency and stress in hedges?

Yellowing leaves and slow growth

Yellowing leaves can indicate nitrogen deficiency or other important nutrients. Slow growth may indicate a lack of nutrients or unfavorable soil conditions. It is important to regularly monitor your hedges for these signs and adjust fertilization and watering accordingly.

Presence of small moths and other pests

The presence of small moths, such as white butterflies, may indicate pest infestations. These insects can cause significant damage to leaves and weaken hedges. Using appropriate treatments and maintaining adequate fertilization can help prevent these problems.

Impact of weather conditions

Weather conditions play a crucial role in hedge health. Dry periods require special attention to watering to avoid water stress. Similarly, cold winds and heavy snows can cause physical damage to branches and roots. Feel free to adapt your practices based on weather forecasts to ensure the growth and health of your hedges.

Outdoor maintenance services in Quebec

At cVert, we are proud to provide comprehensive maintenance services for your outdoor space. From lawn treatment to hedge fertilization to pest control, we handle it all with expertise and care.

Our list of services includes:


Our team ensures that your yard remains healthy and beautiful all year round. Trust us to maintain your yard so you can enjoy a lush and vibrant landscape hassle-free!

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