Viburnums are a popular genus of flowering shrubs that are known for their beautiful flowers, berries, and foliage. They are relatively easy to care for, but like all plants, they benefit from proper fertilization. In this comprehensive guide, we will discuss everything you need to know about viburnum fertilizer, including what type to use, when to apply it, and how much to use.
The best type of fertilizer to use for viburnums is a balanced fertilizer that contains nitrogen, phosphorus, and potassium (NPK). The NPK ratio should be around 10-10-10 or 12-12-12. You can also use a fertilizer that is specifically designed for flowering shrubs.
Viburnums should be fertilized in the spring and fall. The spring application will help to promote new growth and flowering, while the fall application will help to prepare the plant for winter.
The amount of fertilizer you use will depend on the size of your viburnum and the type of fertilizer you are using. For a general guideline, you can apply 1 pound of fertilizer per 100 square feet of planting area.
Here are a few common mistakes to avoid when fertilizing viburnums:
Fertilizing viburnums is important because it helps to promote healthy growth, flowering, and fruiting. Fertilized viburnums are also more resistant to pests and diseases.
Here are a few of the benefits of fertilizing viburnums:
To fertilize viburnums, follow these steps:
Here are a few additional tips for fertilizing viburnums:
Plant Size | Fertilizer Rate |
---|---|
Small (less than 3 feet tall) | 1/4 pound per plant |
Medium (3-5 feet tall) | 1/2 pound per plant |
Large (over 5 feet tall) | 1 pound per plant |
Nutrient Deficiency | Symptoms |
---|---|
Nitrogen deficiency | Yellowing leaves, stunted growth |
Phosphorus deficiency | Purple leaves, poor flowering |
Potassium deficiency | Weak stems, poor fruit production |
Pest or Disease | Symptoms | Control |
---|---|---|
Aphids | Small, green insects that suck sap from leaves | Use insecticidal soap or neem oil |
Spider mites | Tiny, red or brown mites that spin webs on leaves | Use horticultural oil or insecticidal soap |
Powdery mildew | White or gray powdery substance on leaves | Use fungicide |
Leaf spot | Brown or black spots on leaves | Use fungicide |
Cultivar | Fertilizer Rate |
---|---|
'Blue Muffin' | 1/2 pound per plant |
'Chicago Lustre' | 1 pound per plant |
'Dawn' | 1/2 pound per plant |
'Mariesii' | 1 pound per plant |
'Opulus' | 1/2 pound per plant |
Q: How often should I fertilize my viburnum?
A: Viburnums should be fertilized in the spring and fall.
Q: What type of fertilizer should I use for my viburnum?
A: The best type of fertilizer to use for viburnums is a balanced fertilizer that contains nitrogen, phosphorus, and potassium (NPK).
Q: How much fertilizer should I use for my viburnum?
A: The amount of fertilizer you use will depend on the size of your viburnum and the type of fertilizer you are using. For a general guideline, you can apply 1 pound of fertilizer per 100 square feet of planting area.
Q: What are the benefits of fertilizing my viburnum?
A: Fertilizing viburnums promotes healthy growth, flowering, and fruiting. Fertilized viburnums are also more resistant to pests and diseases.
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