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10 Best Guava Tree Fertilizers: Essential Guide to Boost Your Harvest

Why Fertilize Your Guava Tree?

Fertilizing your guava tree is crucial for optimal growth, fruit production, and overall tree health. These fertilizers provide essential nutrients, such as nitrogen, phosphorus, and potassium, that are necessary for strong root development, lush foliage, and bountiful harvests.

According to the Food and Agriculture Organization of the United Nations (FAO), "Guava trees require a balanced supply of macronutrients and micronutrients throughout their growth cycle to achieve maximum yield and fruit quality."

3 Benefits of Guava Tree Fertilizer

Enhanced Fruit Production: Fertilizers provide ample nutrients, promoting vigorous fruit development, resulting in larger, sweeter, and more abundant guava harvests.
Improved Tree Health: Essential nutrients strengthen the plant's immune system, enhancing its resistance to diseases, pests, and environmental stresses, ensuring longevity and vitality.
Increased Soil Fertility: Fertilizers not only benefit the guava tree but also improve soil health by replenishing depleted nutrients and enhancing microbial activity, benefiting other plants in your garden.

4 Essential Nutrients for Guava Trees

Nitrogen (N): Promotes leaf growth, chlorophyll production, and protein synthesis for vigorous vegetative development.
Phosphorus (P): Enhances root growth, flowering, and fruit set for optimal fruit production.
Potassium (K): Improves fruit quality, disease resistance, and overall plant vigor for resilient and productive trees.
Calcium (Ca): Strengthens cell walls, reduces fruit cracking, and improves calcium uptake for healthier and more marketable guavas.

10 Best Guava Tree Fertilizers

Based on extensive research and customer reviews, here are the 10 most effective guava tree fertilizers:

Jack's Classic All-Purpose Fertilizer (20-20-20): A well-balanced fertilizer suitable for all stages of guava tree growth, providing essential nutrients in equal amounts.
Miracle-Gro Fruit & Citrus Food (15-15-15): Specifically formulated for fruit-bearing trees like guavas, providing a balanced nutrient supply to promote abundant fruit production.
Espoma Organic Garden-Tone (5-3-4): An organic fertilizer made from natural ingredients that slowly release nutrients over time, promoting sustained growth and soil health.
Jobe's Organics Fruit & Vegetable Granules (4-4-4): Another organic option that offers gentle and sustained nutrient release, nourishing guava trees without synthetic chemicals.
Down to Earth Organic Citrus Fertilizer (5-5-5): Specifically designed for citrus trees, including guavas, providing a balanced nutrient blend that supports healthy growth and fruit development.
Fertilome Fruit, Citrus & Avocado Food (10-10-10): A water-soluble fertilizer that quickly provides essential nutrients, promoting vigorous growth, especially during fruit-bearing seasons.
Neptune's Harvest Fish & Seaweed Fertilizer (2-3-1): Derived from sustainable fish and seaweed sources, this organic fertilizer offers a rich blend of nutrients and beneficial microbes to enhance soil health and tree vitality.
Southern States Ammonium Nitrate (34-0-0): A high-nitrogen fertilizer ideal for promoting rapid vegetative growth and lush foliage, particularly in early growth stages.
YaraVita Activus (10-0-0): A foliar fertilizer that provides a concentrated dose of nitrogen directly to the leaves, promoting quick nutrient uptake and improved overall health.
Dr. Earth Citrus Trees & Fruit Trees Fertilizer (4-3-3): A slow-release fertilizer that gradually provides nutrients, encouraging strong root development and sustained fruit production.

How to Fertilize Your Guava Tree

Frequency: Fertilize your guava tree every 4-6 weeks during the growing season (spring and summer).
Method: Apply fertilizer evenly around the base of the tree, keeping it away from the trunk to avoid burning the roots.
Quantity: The amount of fertilizer needed will vary depending on the size of the tree and the specific fertilizer used. Follow the manufacturer's instructions carefully.

4 Useful Tables for Guava Tree Fertilizer Application

Table 1: Fertilizer Application Rates for Guava Trees

Tree Age	Nitrogen (N)	Phosphorus (P)	Potassium (K)
1-2 years	0.25-0.5 lb/year	0.12-0.25 lb/year	0.12-0.25 lb/year
3-5 years	0.5-1 lb/year	0.25-0.5 lb/year	0.25-0.5 lb/year
6+ years	1-2 lb/year	0.5-1 lb/year	0.5-1 lb/year

Table 2: Symptoms of Nutritional Deficiencies in Guava Trees

Nutrient	Symptoms
Nitrogen	Yellowing leaves, stunted growth, poor fruit production
Phosphorus	Purple leaves, poor root development, delayed flowering
Potassium	Weak stems, small fruit, susceptibility to diseases
Calcium	Fruit cracking, yellowing leaves, reduced fruit set

Table 3: Organic vs. Synthetic Fertilizers for Guava Trees

Type	Advantages	Disadvantages
Organic	Natural, sustainable, improves soil health	Slower nutrient release, may require more frequent applications
Synthetic	Quick nutrient release, precise control over nutrient levels	Can be harmful to beneficial soil organisms, potential for run-off

Table 4: Innovative Guava Tree Fertilizer Applications

Application	Benefits
Fertigation	Delivers nutrients directly to the roots through irrigation systems, ensuring efficient uptake and reducing nutrient loss
Foliar Feeding	Sprays nutrients directly onto the leaves, providing a quick boost during critical growth stages or when soil conditions are poor
Slow-Release Fertilizers	Provide nutrients gradually over an extended period, reducing the need for frequent applications and minimizing nutrient leaching
Biofertilizers	Utilize beneficial microorganisms to enhance nutrient availability and promote root growth and overall soil health