Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Guava trees are hungry feeders, and the right fertilizer for guava tree growth makes the difference between a few tart fruits and a bountiful harvest of sweet, juicy guavas. Getting the NPK ratio and nutrient mix right means you feed the tree, not just the leaves.
I’m Rikta — the founder and writer behind Lawn Gear Lab. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
If your guava tree is not producing fruit or looks sluggish, the right fertilizer for guava tree can fix that. This guide matches each product to your tree’s growth stage and your gardening style, whether you are a beginner or a seasoned orchard keeper.
Quick Picks
- Down To Earth All Natural Fertilizers Organic — Best Overall
- Bloom City’s Organic Citrus & Fruit — Premium Liquid
- TPS Guava Tree Fertilizer — Guava Specific
- Espoma Organic Citrus-Tone 5-2-6 Natural & — Best Value
- Fertilome (13820) Fruit, Citrus — High Nitrogen
- TPS Mango Tree Fertilizer — Tropical Alternative
- TPS Nutrients Citrus Fertilizer — Liquid Entry
How To Choose The Best Fertilizer For Guava Tree
Guavas are heavy feeders that need a balanced diet of nitrogen, phosphorus, and potassium, plus a few key micronutrients like zinc and calcium. The right fertilizer for guava tree health varies by soil condition, tree age, and whether you prefer organic or synthetic feeding.
NPK Ratios and What They Mean
Nitrogen (N) drives leafy growth, phosphorus (P) supports root and flower development, and potassium (K) boosts fruit size and sweetness. For a mature guava tree, a lower first number and higher second and third numbers (like a 5-2-6 or 6-2-4) encourage fruit set instead of runaway foliage.
Granular vs Liquid Forms
Granular fertilizers release nutrients slowly over weeks, making them ideal for pre-growing season top-dressing. Liquid fertilizers, on the other hand, get absorbed quickly through the roots and leaves, which makes them better for a mid-season boost when you spot signs of deficiency.
Organic Certification and Micronutrients
Organic options use ingredients like feather meal, fish bone meal, and kelp meal to feed the soil microbiome. Look for an OMRI listing if you want to maintain organic gardening practices, and check for added calcium and zinc — both critical for preventing fruit cracking and rosette diseases.
Quick Comparison
| Model | Best For | NPK Ratio | Form | Size | Amazon |
|---|---|---|---|---|---|
| Down To Earth Organic Fruit Tree 6-2-4 | Best Overall Organic | 6-2-4 | Powder | 5 lb | Amazon |
| Bloom City’s Organic Citrus & Fruit | Premium Liquid | — | Liquid | 32 oz | Amazon |
| TPS Guava Tree Fertilizer | Direct Guava Formula | — | Liquid | 32 oz | Amazon |
| Espoma Organic Citrus-Tone 5-2-6 | Organic Value Pick | 5-2-6 | Granules | 4 lb | Amazon |
| Fertilome Fruit, Citrus and Pecan 19-10-5 | Synthetic High Nitrogen | 19-10-5 | Granules | 3.25 lb | Amazon |
| TPS Mango Tree Fertilizer | Sister Tropical Formula | — | Liquid | 32 oz | Amazon |
| TPS Nutrients Citrus Fertilizer | Liquid for Potted Trees | — | Liquid | 32 oz | Amazon |
In‑Depth Reviews
1. Down To Earth All Natural Fertilizers Organic Fruit Tree 6-2-4, 5 lb
The organic powder that covers more ground per bag than the competition.
This is the pick that balances volume, certified organic ingredients, and a 6-2-4 NPK ratio that encourages fruit development without excessive leaf growth. The formula includes feather meal, fish bone meal, calcium carbonate, langbeinite, potassium sulfate, alfalfa meal, and kelp meal — a full spectrum of nutrients that feed both the tree and the soil.
It is listed by the OMRI (Organic Materials Review Institute) for use in organic production, so you can trust the ingredients. Buyers report that the powder mixes easily into the topsoil around the drip line and produces noticeable results in fruit sweetness by the second season. The trade-off is that it is a powder rather than pre-measured granules, so you need to apply it carefully to avoid dust.
Best for organic orchards: This one-size-fits-most tropical fruit fertilizer delivers the most volume and the most organic certifications for the price, making it the go-to for backyard guava growers who want a single all-purpose bag.
The catch: Slow-release powder requires a bit of effort to work into the soil and does not provide the instant green-up that liquid feeds offer.
Reach for this if: you want an OMRI-listed, all-natural organic fertilizer that gives you 5 pounds of product and a balanced NPK that works across all your tropical fruit trees.
Look elsewhere if: you need a fast-acting liquid response for a tree that is currently showing signs of nutrient deficiency.
2. Bloom City’s Organic Citrus & Fruit Fertilizer, 32 oz
The fast-absorbing liquid that gives your guava an instant nutrient boost.
When your guava tree has yellowing leaves or a weak fruit set, a liquid fertilizer like this one from Bloom City delivers nutrients straight to the root zone without waiting for soil microbes to break down granules. It is formulated specifically for citrus and fruit trees, making it a close cousin to what a guava tree needs — balanced nutrition that supports strong root development and productive harvests.
With a strong 4.5 out of 5 stars from 226 customer reviews, this is the most-reviewed liquid option in our list, and buyers consistently note that their trees responded with new growth within a week. The liquid volume is 32 fluid ounces, which you mix at feeding time. It works for both backyard orchards and container-grown guava trees, giving you flexibility depending on your setup.
Why it stands out
- Fast-acting liquid formula delivers nutrients immediately
- Suitable for containers, landscape trees, and orchards
- Strong buyer approval (4.5 stars, 226 ratings)
One limitation
- The NPK ratio is not listed on the data, so you cannot compare it directly to granular feeds
Best for quick correction: Use this liquid feed when you see signs of deficiency or want to give your guava tree a pre-bloom boost without waiting for granules to break down.
Not ideal for: gardeners who prefer the low-maintenance convenience of a slow-release granular product.
3. TPS Guava Tree Fertilizer – Liquid Plant Food, 32 oz
The only pick on this list explicitly named for guava trees.
Most fertilizers for tropical fruit trees are labeled for citrus or mango, but TPS Nutrients made a liquid plant food that is specifically designed for guava. It promises to encourage strong flowering, fruit set, and consistent guava development without overstimulating leaf growth — which is the common mistake beginners make when they use a high-nitrogen lawn fertilizer on their fruit trees.
The 32-ounce liquid container uses a 2-tablespoon-per-gallon mixing ratio (based on the brand’s similar citrus product), and buyers who left the 57 reviews gave it a 4.4 out of 5 star rating. It says it works well for backyard trees, container-grown guava, and small orchards. The catch is that because it is a very specific product, the label does not list a clear NPK ratio in the data, so you are trusting the brand’s proprietary blend.
Perfect for guava purists: If you want a fertilizer with “Guava Tree” right on the bottle, this is the one — no guessing whether a citrus formula is close enough.
Trade-off: You pay a premium for the specificity, and the lack of a printed NPK ratio means you cannot easily fine-tune your feeding schedule.
Reach for this if: you want a formula designed specifically for guava trees, especially when growing in containers, so you do not have to guess the nutrient mix.
Look elsewhere if: you need a granular slow-release option or want a clear NPK ratio to compare against other fertilizers.
4. Espoma Organic Citrus-Tone 5-2-6 Natural & Organic Fertilizer, 4 lb
The budget-friendly organic granule that punches above its weight for citrus and tropical trees.
Espoma has been making organic soil amendments since 1929, and this Citrus-Tone formula comes with a clear 5-2-6 NPK analysis plus 5% calcium — a critical micronutrient that prevents fruit cracking in guavas. The granules are ready to use with no mixing required, and the brand says you should apply it late winter pre-bloom, spring post-bloom, and in the fall.
While the 4-pound bag is 25% lighter than the Down To Earth 5-pound box, it costs noticeably less, making it a great entry-level pick. Owners mention that it is easy to apply and smells like natural ingredients rather than chemical fertilizer. It is approved for organic gardening and registered as an Organic Input Material. The trade-off is that it is formulated primarily for citrus, so it is a close match for guava but not a dedicated guava formula.
Reasons to buy
- Clear 5-2-6 NPK ratio with added 5% calcium
- No mixing required — just sprinkle and water
- Organic and environmentally safe ingredients
Limitations
- The 4 lb bag is smaller than the premium organic competitor
- Citrus formula rather than a dedicated guava formula
Best for budget-conscious organic gardeners: This Espoma bag gives you the organic label and a fruit-friendly NPK ratio at the lowest entry price among the organic granular picks.
Not for: growers with multiple tropical fruit trees who want a single larger bag to cover the whole orchard season.
5. Fertilome (13820) Fruit, Citrus and Pecan Tree Food 19-10-5, 3.25 lbs
The synthetic high-nitrogen granular that grows a lush canopy — use with caution on fruiting.
This Fertilome blend has an NPK ratio of 19-10-5, which is extremely high in nitrogen compared to every other pick on this list. While that makes it great for young guava trees that need to build a strong canopy and root system, it can cause mature trees to put all their energy into leaves instead of fruit. It also includes zinc to control Rosette in pecan trees — a nice bonus if you also grow nut trees nearby.
The 3.25-pound bag is the smallest by weight on this list, and the manufacturer recommends feeding twice a year. It is best suited for established trees that need a quick green-up or for soil that is notably low in nitrogen. The catch is obvious: use this during the vegetative growth phase, not when you want the tree to set fruit, or you risk getting a big leafy tree with very few guavas.
Ideal for young trees: If you are growing a new guava tree from a sapling and want to push strong stem and leaf growth in the first year, this high-nitrogen option works well.
Warning for mature trees: Using this during the flowering phase can reduce fruit yield — switch to a lower-nitrogen formula like the 5-2-6 or 6-2-4 options once your tree is established.
Reach for this if: you have a young or struggling guava tree that needs a big nitrogen boost to build foliage and branches.
Look elsewhere if: you want to boost fruit production from a mature tree — the high nitrogen here works against that goal.
6. TPS Mango Tree Fertilizer – Liquid Plant Food, 32 oz
A sister fertilizer from the same brand that guava growers are turning to as a strong alternative.
The TPS Mango Tree Fertilizer is formulated for mango and tropical fruit trees. Because guava shares similar growing conditions and nutrient needs with mango, this liquid feed works as a smart backup if the dedicated guava version is out of stock. It supports healthy root growth and consistent fruit production, and buyers give it a 4.6 out of 5 star rating from 152 reviews — the highest average score on this list.
Like the guava-specific TPS product, this comes in a 32-ounce liquid container and is made in the USA. Customers note that it is easy to mix and does not burn the roots even when applied to potted trees. The trade-off is that, like the guava version, no NPK ratio is printed on the label, so you are relying on the proprietary blend. It is a minor inconvenience for a product that many tropical fruit growers already trust.
Why it works for guava
- Formulated for tropical fruit trees that need similar NPK balances
- Best review score (4.6 stars) among all picks
- Made by the same brand as the dedicated guava fertilizer
Downside
- No NPK ratio listed for direct comparison
- Labeled for mango, so it is a close but not exact match for guava
Best alternative to the guava-specific pick: If the dedicated TPS guava formula is unavailable, this mango formula from the same brand is the closest cousin you can buy.
Not ideal for: purists who insist on a fertilizer that says “Guava” on the bottle.
7. TPS Nutrients Citrus Fertilizer – Liquid Plant Food, 32 oz
The simple, no-fuss liquid citrus feed that works for potted guava trees.
TPS Nutrients rounds out the list with a citrus-focused liquid fertilizer that is designed for oranges, lemons, and limes — but works for guava because of the similar nutritional demands of tropical fruit trees. The mixing ratio is clearly stated: 2 tablespoons per 1 gallon of water, which makes it the most straightforward liquid to measure on this list. It comes in a 32-ounce bottle at a slightly lower price than the guava-specific TPS version, making it a budget entry point into the TPS ecosystem.
The formula is designed to promote flowering, fruit set, and consistent tree performance, and it works for both potted and outdoor trees. Buyers appreciate that it is a fast-absorbing liquid that gets results within days rather than weeks. The trade-off is that, like the other TPS liquids, it is a proprietary blend without a printed NPK ratio, which some experienced gardeners find frustrating.
A solid budget liquid starter: If you have a single potted guava tree and want a simple, fast-acting liquid feed without paying for a specialty guava label, this citrus formula is a smart buy.
Consider the limitation: Without a visible NPK ratio, you are trusting the brand’s formulation to be right for guava, but the brand has good buyer scores across their liquid line.
Reach for this if: you want the lowest-cost liquid option from a brand that specializes in fruit tree nutrition, and you are comfortable with a citrus-formulated product.
Look elsewhere if: you want a granular slow-release feed or need a printed NPK ratio to match a specific soil test.
Understanding the Specs
NPK Ratio — What Those Three Numbers Mean
The three numbers on a fertilizer label (N-P-K) stand for Nitrogen, Phosphorus, and Potassium. For a guava tree, you generally want a lower first number (around 5 or 6) for mature trees that are already fruiting, because too much nitrogen pushes leaf growth instead of fruit. The second number (phosphorus) supports root and flower development, and the third number (potassium) is critical for fruit size and sweetness.
Granules vs Liquids — Speed vs Longevity
Granular fertilizers like Espoma Citrus-Tone and Down To Earth are slow-release, meaning you apply them every few months and they feed the tree gradually as the soil microbes break them down. Liquid fertilizers like the TPS and Bloom City options are fast-absorbing, which is useful when you spot a deficiency or want a quick pre-bloom boost. For most home growers, a combination of a granular feed in early spring and a liquid feed during the growing season gives the best results.
FAQ
What NPK ratio is best for a guava tree?
Can I use a citrus fertilizer on a guava tree?
How often should I fertilize my guava tree?
Should I use organic or synthetic fertilizer for my guava tree?
What happens if I use too much nitrogen on a guava tree?
Can I use a mango tree fertilizer on a guava tree?
Do I need to add calcium or zinc separately for guava trees?
When is the best time to switch from a high-nitrogen to a low-nitrogen fertilizer for guava?
How do I apply granular fertilizer to a guava tree?
Can I use a guava tree fertilizer on potted guava trees?
Final Thoughts: The Verdict
If you want one dependable pick, the fertilizer for guava tree winner is the Down To Earth Organic Fruit Tree 6-2-4 because it offers organic certification, soil-healthy ingredients, and the most volume per bag for the price. If you want a fast-acting liquid that your tree can absorb immediately, grab the TPS Guava Tree Fertilizer. And for budget-conscious organic gardeners who still want a clear NPK ratio (nitrogen-phosphorus-potassium numbers), the Espoma Organic Citrus-Tone 5-2-6 delivers a reliable 5-2-6 blend at a lower cost per pound than the Down To Earth bag.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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