Guidelines for Applying Fertilizer to Petunias at the Correct Time
Petunias, known for their vibrant colours and delightful fragrance, are considered "heavy feeders," requiring regular nourishment to thrive. Here's a guide to help you provide the best care for your petunias, whether they're in pots or garden beds.
When it comes to potting mix for petunias in containers, opt for a high-quality potting mix. At planting time, the soil in garden beds can be amended well, using a finished compost and a slow-release granular feed.
For potted petunias, frequent fertilization is necessary. Water-soluble fertilizers, known for their ability to quickly deliver nutrients to plants, are ideal for this purpose. These can be used as foliar feed or soil drench. The frequency of application may vary based on the manufacturer's instructions and soil conditions.
In garden beds, a balanced, water-soluble fertilizer with a ratio like 10-10-10 or 20-20-20 should be applied every two weeks during the growing season for optimal flowering.
Granular fertilizers are most common and are worked directly into the soil at planting time. Later in the season, granules or pellets can be used to side-dress plants, just before the production of flowers.
Experienced growers often rely on soil tests to better meet the needs of their petunias. Foliar and water-soluble feeds can be used throughout the summer to help maintain adequate nutrient levels for the continued production of flowers.
Other types of fertilizer used with petunia plants include compost teas, blood meal, bone meal, and fish emulsion. It's essential to use these fertilizers only as directed.
Remember, fertilizer should be used during periods of active growth. For instance, signing up for a platform newsletter grants access to a free e-book "How to Grow Delicious Tomatoes," where you'll find more gardening tips, videos, info, and more.
Lastly, for those interested in petunia cultivation, gardening expert Tonya Barnett has transformed her backyard into a cut flower garden and regularly chronicles it on her YouTube channel. Her insights and experiences could prove invaluable for your petunia journey.
Happy gardening!
