When it comes to fertilizing hollyhocks, it is important to provide them with a balanced and nutrient-rich fertilizer that will help promote healthy growth and abundant blooms. Hollyhocks benefit from a fertilizer that is high in phosphorus, as this nutrient is essential for flower development.
To start, it is recommended to scratch a balanced granular fertilizer into the soil around the plants when the new foliage is about 2 inches high. This will provide a good foundation of nutrients for the hollyhocks as they begin to grow. Look for a balanced fertilizer with a ratio of NPK (nitrogen, phosphorus, and potassium) such as 10-10-10 or 14-14-14. Follow the instructions on the fertilizer package for the recommended amount to use based on the size of your hollyhock plants.
Once the hollyhocks have established themselves and are actively growing, it is beneficial to switch to a high-phosphorus, water-soluble fertilizer in June. This will help promote strong and vibrant blooms. Look for a water-soluble fertilizer with a higher phosphorus content, such as a 10-30-20 formula. Water-soluble fertilizers are easy to apply and are quickly absorbed by the plants.
To apply the water-soluble fertilizer, mix it according to the instructions on the packaging. Then, use a sprayer or watering can to apply the fertilizer to the tops and undersides of the hollyhock leaves. This foliar application will allow the plants to absorb the nutrients directly through their leaves, providing them with a quick and efficient nutrient boost. It is recommended to apply the water-soluble fertilizer twice a week during the growing season.
In addition to regular fertilizer applications, it is important to provide hollyhocks with adequate water and sunlight. These plants thrive in full sun and require regular watering to keep the soil evenly moist. Mulching around the base of the plants can help retain moisture and regulate soil temperature.
Personal experience: I have been growing hollyhocks in my garden for several years now, and I have found that fertilizing them with a balanced granular fertilizer early in the season and switching to a high-phosphorus water-soluble fertilizer in June has resulted in beautiful and abundant blooms. I typically apply the water-soluble fertilizer in the morning or late afternoon when the temperatures are cooler to avoid any potential leaf burn. Additionally, I make sure to water the plants thoroughly before and after fertilizing to ensure the nutrients are properly absorbed by the roots.
A combination of a balanced granular fertilizer and a high-phosphorus water-soluble fertilizer will provide hollyhocks with the necessary nutrients for healthy growth and stunning blooms. Regular fertilization, along with proper watering and sunlight, will help ensure your hollyhocks thrive in your garden.
