When it comes to fertilizing hydrangeas, the timing can vary depending on the type of hydrangea you have. Different hydrangea varieties have different fertilizer needs, so it’s important to know which variety you have in order to properly care for it.
Bigleaf hydrangeas, also known as Hydrangea macrophylla, are one of the most common types of hydrangeas. These hydrangeas have large, rounded flower heads and can be either blue or pink depending on the soil pH. For bigleaf hydrangeas, it is recommended to apply fertilizer three times a year – in March, May, and June. This light fertilization schedule helps provide the necessary nutrients for healthy growth and blooming.
Oakleaf hydrangeas, or Hydrangea quercifolia, are another popular variety. These hydrangeas have unique oak-shaped leaves and cone-shaped flower clusters. Oakleaf hydrangeas have slightly different fertilization needs compared to bigleaf hydrangeas. It is recommended to fertilize oakleaf hydrangeas twice a year – once in April and again in June. This provides a boost of nutrients during the growing season and helps promote strong, vibrant blooms.
Panicle hydrangeas, also known as Hydrangea paniculata, are a hardy and low-maintenance variety. They have elongated, cone-shaped flower clusters and can tolerate a wide range of soil conditions. Similar to oakleaf hydrangeas, panicle hydrangeas should be fertilized twice a year – in April and June. This helps support healthy growth and abundant blooms.
Smooth hydrangeas, or Hydrangea arborescens, are known for their large, white flower clusters. These hydrangeas are native to North America and are quite adaptable to different soil conditions. Smooth hydrangeas have a slightly different fertilization schedule compared to other varieties. It is recommended to fertilize smooth hydrangeas once in late winter, before new growth begins. This provides the necessary nutrients for strong, healthy growth and beautiful blooms.
In addition to the specific fertilization schedules for each hydrangea variety, it is important to choose the right type of fertilizer. A balanced, slow-release fertilizer with a ratio of 10-10-10 or 14-14-14 is generally a good choice for hydrangeas. This provides a mix of nitrogen, phosphorus, and potassium, which are essential for healthy plant growth. It is also beneficial to choose a fertilizer that is specifically formulated for acid-loving plants, as hydrangeas prefer slightly acidic soil.
When applying fertilizer to hydrangeas, it is important to follow the instructions on the fertilizer package and not to over-fertilize. Applying too much fertilizer can cause burn to the plant’s roots and lead to nutrient imbalances. It is better to err on the side of caution and apply a little less fertilizer than recommended, rather than risking harm to the plant.
The timing and frequency of fertilizing hydrangeas depends on the specific variety. Bigleaf hydrangeas should be fertilized lightly three times a year, while oakleaf and panicle hydrangeas should be fertilized twice a year. Smooth hydrangeas only require one fertilization in late winter. Choosing the right type of fertilizer and following the instructions on the package are important for successful fertilization. By providing the proper nutrients at the right time, you can help your hydrangeas thrive and produce beautiful blooms.
