A good all-purpose 12-4-8 or 10-10-10 composition will provide all the fertilizing hydrangeas need. Either a chemical source or organic matter can be used successfully. Applying a once a year slow-release chemical formulated for shrubs and trees is the simplest solution to hydrangea care and feeding.
Organic, slow-release, all-purpose, balanced fertilizer also works well for hydrangeas. While a balanced fertilizer such as one with a 10-10-10 ratio will give your plant what it needs for healthy growth, it won't boost the size and number of blooms your plant will produce like a rose fertilizer will.
Use a fertilizer low in phosphorous (the middle number in the content analysis) such as 12‐4‐8 to encourage production of blue flowers. For other types of hydrangeas, use a general purpose fertilizer, at recommended rates on the package. Incorporate dry fertilizer into top 2” – 3” of soil and water thoroughly.
Also, when you do water, after a week or 10 days, water with a water soluble fertilizer such as Miracle Grow, Rapid Grow or Peters 20-20-20. Apply this water soluble fertilizer every second or third watering and see if the plant doesn't do better.
Hydrangeas should be fertilized twice during the year – once in early spring to promote flowering and once in early fall to finish out the season. Well-performing Hydrangeas only need a low-concentration, balanced fertilizer with equal NPK values, while a 15-30-15 fertilizer higher in phosphorus will improve flowering.
Select the best fertilizer for hydrangeas.
They also do best with a formulation that encourages flower production. Balanced granular fertilizers such as Espoma Rose Tone and Holly Tone are good choices. Jobes Fertilizer Spikes are another good option. Avoid using fast-release fertilizers in liquid form on hydrangeas.
Our 20-20-20 Garden Fertilizer is a multi-purpose, premium fertilizer that can be used in all stages of plant growth in vegetable or flower gardens. It contains equal amounts of nitrogen (20%), phosphorous (20%) and potassium (20%) to provide a balanced formula for your garden plants.
Avoid feeding hydrangeas after August, especially in regions with cold winters. A slow-release plant food works well. For best results, try Miracle-Gro® Shake 'n Feed® Flowering Trees & Shrubs Plant Food, which feeds for up to 3 months.
15-10-10 Flower Fertilizer
Great for Hybrid Tea, Old Fashion & Landscape Roses. They're like Vitamins for your Landscape!
If you over-fertilize, it can burn the root system of your hydrangea bushes and actually inhibit bloom production. For more tips on fertilizer and how to achieve big, beautiful blooms, please click here. My hydrangeas have brown dry spots on the leaves and brown petals on the bloom.
Recommended for root development of all types of plants. Normally is selected for feeding trees and landscaping plantings. Recommended for root development of all types of plants.
Supply the Right Amount of Water. Along with planting them in the right place, properly watering your hydrangeas is essential to bigger and better blooms. "Hydrangeas should be watered deeply several times per week to encourage deep root growth," says Enfield.
Typically hydrangeas thrive when fed an all-purpose, balanced fertilizer like a 10-10-10 N-P-K or 12-4-8 N-P-K. To increase the size and quantity of hydrangea blooms, consider a fertilizer with more phosphorus.
Don't fertilize after August. Fall is the time for hydrangeas to begin preparing for dormancy. Fertilizing at this time may stimulate new growth that will be too tender to withstand the winter. In the South, a late May application and another in July would be about right.
Consider using Milorganite, a low nitrogen slow release fertilizer for your hydrangeas. It provides small amounts of needed nutrients over a longer period of time. Another common concern is a lack of flowers on recently planted flowering shrubs, including the reliably hardy hydrangeas.
Its 30:30:30 nutrient ratio makes it good for almost any stage of plant growth. The design of the formula uses nutrients that provide strength to the plant, as well as, lush green growth.
Overview. LESCO 20-5-10 Fertilizers with Slow-Release Feeding provides up to 45 days of deep greening on Texas lawns and other warm-season grasses. Its enhanced greening combination of Poly Plus technology, LESCO NOS stabilized nitrogen and 2% iron can be applied throughout the spring and summer.
15-15-30 water soluble garden fertilizer. Water soluble • Ideal for vegetable garden, tomatoes, herbs and fruit plants • Promotes healthy plants and an abundant harvest • Promotes resistance of vegetable plants to diseases and strengthens the stems • Accelerates ripening fruits and vegetables.
Hydrangea Care Tips
Water at a rate of 1 inch per week throughout the growing season. Deeply water 3 times a week to encourage root growth. Bigleaf and smooth hydrangeas require more water, but all varieties benefit from consistent moisture.
Some gardeners report success in turning their hydrangeas blue by applying coffee grounds to the soil. The coffee grounds make the soil more acidic, allowing the hydrangea to more easily absorb aluminum. In addition, fruit peels, lawn clippings, peat moss and pine needles, are thought to have a similar effect.
GROMOR 20:20:0:13 is the most preferred fertiliser for most of the crops and mainly for oilseed crops. Wheat, Paddy, Sugarcane, Onion & Chilly 100-150 kg,Potato- 200kg, Mustard, Maize and Peas 80-100 kg.
It is aimed at the nutrition of various crops, grown on various soil types, especially when there is a distinct need for potassium. It is applied in the basic or pre-seeding cultivation of land, by even distribution on the entire area or locally in rows.
GRO-WELL Brands Inc.
Arizona's Best Starter Fertilizer has an N, P and K ratio of 6-20-20 and is designed to help grass and sod develop roots and mature stems before top growth begins. Either apply before sod is laid or immediately after seed is sown, and at the time of planting for flowers, trees and shrubs.