After a long, cold winter in our Zone 6A garden, the first signs of life emerging from our roses and hydrangeas signal it’s time for an important spring task—fertilizing. Proper spring feeding sets the stage for healthy growth and abundant blooms throughout the season. Today, we’re sharing our approach to feeding these garden favorites to encourage their best performance.
How do you know when it’s the right time to fertilize? Look to your plants for signals. We wait until we see definite signs of awakening before adding nutrients. For our roses and hydrangeas, this means:
In our upstate New York garden, this typically happens in mid-to-late spring after the soil has warmed sufficiently. This year, despite an unusually cold winter and chilly spring, our plants are showing us they’re ready for their first feeding.
While we don’t use exclusively organic products for all garden applications, we do prefer organic fertilizers for our spring feeding of in-ground plants. Here’s why:
For our spring feeding, we use Coast of Maine Stonington Blend organic plant food (5-2-4 NPK), which contains:
This balanced formulation provides all the nutrients our roses and hydrangeas need without pushing excessive growth that could be susceptible to disease or pest problems.
Rather than applying the fertilizer directly, we prefer to mix it with a high-quality planting medium. For this application, we combine:
This mixture creates an enriched top-dressing that:
We mix these components thoroughly in a garden cart before application, ensuring even distribution of the fertilizer throughout the soil.
One of the most important aspects of effective fertilizing is knowing where to apply your nutrients. Many gardeners mistakenly concentrate fertilizer right at the base of plants, but this isn’t where most active feeding roots are located.
The drip line is the area beneath the outermost circumference of the plant’s foliage—essentially where water would drip off the leaves during rain. This zone is where most of the active, nutrient-absorbing roots are located.
The drip line varies depending on:
For newly planted roses and hydrangeas (planted within the past year):
For established plants (2+ years in the ground):
For mature specimens:
Different types of roses and hydrangeas have varying nutritional needs and growth habits that affect how we fertilize them:
Smooth Hydrangeas (Hydrangea arborescens) like Invincibelle Spirit II and Mini Mauvette:
Panicle Hydrangeas (Hydrangea paniculata) like Firelight Tidbit and Pinky Winky:
Big Leaf and Mountain Hydrangeas (Hydrangea macrophylla and Hydrangea serrata):
Oak Leaf Hydrangeas (Hydrangea quercifolia):
English Shrub Roses like Lark Ascending, Crown Princess Margaretta, and Lady of Shalott:
Landscape Roses:
Not every plant in our garden receives the same treatment:
Timing our fertilizer application with expected rainfall is not only convenient but environmentally responsible. The gentle, consistent moisture from rain helps:
If rain isn’t in the forecast, water the area lightly after application to begin the nutrient release process.
Beyond the practical benefits, spring fertilizing offers an opportunity to reconnect with each plant in your garden after winter’s separation. As we moved through our garden applying fertilizer, we:
With over 200 hydrangeas and 80 roses in our garden, this spring feeding is no small undertaking! But the investment of time now will reward us with months of beautiful blooms and healthy growth.
What spring feeding regimen do you follow for your garden favorites? Have you found certain fertilizers that perform particularly well in your growing conditions? We’d love to hear about your experiences!
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