Tree Secret® Tree Fertilizer

Feed Your Trees... and Create A Lush Paradise Around The Yard!

Tree Secret® tree fertilizer formerly known as Save-A-Tree is a biologically correct (non-synthetic) fertilizer that has been created specifically for enhanced tree success. Our small batch, extra potent blend of readily available tree nutrients are exactly what your trees, plants, and bushes need to revitalize and look great for years to come. The competition doesn't come close!

  • Nitrogen found in most chemical lawn fertilizer is largely responsible for the unnatural rapid growth that weakens trees by thinning their protective cell walls; this opens the door for disease, wind damage, and bug infestations... 
  • Plants and bushes need the same nutrition as slow growing trees. Give your yard a serving of this ultra potent, undiluted, carbon based fertilizer and watch in amazement as your trees thrive and your landscape transforms into a lush paradise.
  • Excellent results on all trees, bushes, and evergreens! Use 2 times per year to save a dying tree and 1 time per year to maintain good tree health.
  • Happy trees have less problems. This stuff works.

Save 10% on cases of 6 or more jugs

Buy 64 ounce Tree Secret® Today!  Freight Paid To All US States. 

What Makes Us Different?

Frequently Asked Questions

What makes Tree Secret® different from other fertilizers for trees?

Most tree fertilizers on the market are either a general lawn fertilizer repackaged with a tree label or a granular fertilizer loaded with synthetic nitrogen that forces fast, weak growth. Tree Secret® was formulated specifically for what trees actually need. The 4-1-0 ratio delivers nitrogen along with sulfur, phosphorus, and available nutrients derived from all-natural sources like alfalfa and rock phosphate. Instead of thinning cell walls with chemical fertilizers, Tree Secret® feeds the microbes in your root zone so they can break down and deliver nutrients at a biological level, supporting stronger root growth, better nutrient availability, and healthy growth that lasts. That's why we consider it the best fertilizer for trees on the market.

Can I use Tree Secret® on shrubs, bushes, and fruit trees?

Absolutely. Tree Secret® works on all types of woody plants, including deciduous trees, evergreens, fruit trees, shrubs, and bushes. Plants and bushes need the same nutrition as slow-growing trees, so a single application of this complete fertilizer gives your entire landscape what it needs. Use it twice per year on stressed or dying trees and once per year for general maintenance. For larger trees, base your dosage on trunk diameter to make sure you're applying enough.

When is the best time to apply fertilizer for trees, and how do I know if my trees need it?

The best time for fertilizer application is in early spring when trees are coming out of dormancy and again in late summer or early fall to help them store nutrients before winter. Avoid fall fertilization too late in the season, as it can stimulate new growth that won't harden off before frost. For established trees, one to two applications per growing season is typically enough. If you're unsure whether your trees need additional fertilizer, a soil test is the best place to start. Your soil test results will show your soil pH and nutrient levels, so you know where the gaps are. Signs of nutrient deficiency include pale or yellowing leaves, stunted new growth, and a thin canopy. Tree Secret® is an excellent foundation for any tree care program because it delivers essential nutrients without the salt buildup that comes with synthetic options.

Overall rating: 4.8816423 / 5 from 1242 reviews.

AI Generated Review Summary

Tree Secret® Tree Fertilizer revitalizes trees, plants, and bushes, leading to lush growth and healthier appearance. Customers report significant improvements in tree health and foliage vibrancy, with noticeable differences in tree and shrub appearance.

Summary topics

  • Tree Growth: 7%
  • Tree Appearance: 14%
  • Noticeable Difference: 3%
  • Product Results: 11%
  • Tree Health: 34%

Review topics: [instructions, color, shipping, photos, customer service, look, feel, problem, results, improvement, weather, service, summer, water, order, use, price, work, trees, growth, fertilizer, leaves, plants, difference, foliage, branches, change, bushes, application, evergreens].

Review highlights

  • "Great product, trees and shrubs, beautiful full foliage, even the “ elder” trees are happy!"Carol H.
  • "Tree Secret was easy to mix and use, and has our young arbor vitae and maple trees looking great!"Thomas S.
  • "My fruit trees are looking beautiful and strong and they all have the biggest crop of fruit that they have ever had."Linda P.

Reviews

My trees look amazing!

"I live in a high altitude desert environment that is very hard on all my trees. I used Tree Secret and wow what a difference. My sycamore tree look pathetic and I figured I would need to cut it down soon. Last year at this time it was producing spare and small leaves. This year it's a healthier tree. All my trees are more vibrant in their colors."

Shawn C. (5/5)

Great product

"This product works well. This is my second year using it this year. I noticed I had some light brown for me on all my trees. Thought they had not enough water for too long a time. But they came out of it. I had a doctor Jim’s again and they came out of it and they look wonderful. I will keep using it."

Gary A. (5/5)

Tree Secret

"I just put the fertilizer on in April. It seems like there is new growth on my Holly trees. Keeping my fingers crossed that they will become fuller. I’m purchasing another bottle so I can give them another treatment this Fall."

Karen F. (5/5)

Tree Secret Working Wonders on Texas Ash Trees

"I have 30 year old Texas Ash Trees and I live in Del Rio TX. During the last year I saw less foliage and I was recommended to top the trees since they are old tree. Well I decided to give Tree Secret a try and after applying Tree Secret I could see new growth and less transparency. Since then I have applied a second treatment and what was once yellowish and few leaves has now new growth and dark green leaves. I highly recommend Tree Secret. Thanks for a great product."

Rogelio G. (5/5)

Cherry trees

"Great product so far. Two years old trees that needed a boost. Rich green leaves and strong new growth. I fed the trees in end of February. Obviously it’s working."

Joe B. (5/5)

Tree Secret!!!!

"If any tree is struggling with infested bugs, cicadas or any other insects, any diseases or anything… TREE SECRET IS WHAT IT NEEDS!! Literally I was in total despair with my tree, some friend mentioned Tree Secret and I was willing to try anything. So I bought it, followed all instructions and exactly 1 year later you wouldn’t believe my results. Here it is…. !!!"

MariAnne (5/5)

Tri Color Beech

"This beautiful tree was here when we pur hased home 27 years ago. It is the jewel of the garden. I usually use tree feeding stakes but purchased Dr. Jimz this year in Spring."

Karen S. (4/5)

Have 2 fruit trees 1

"Have 2 fruit trees 1 cherry 1 Italian plum. Both were nearly destroyed by black aphids last year. I didn’t think they would make it through winter. I put your magic tree potion on them early spring and they are thriving. Fingers crossed for fruit to set. Thank you for a great product"

Deb R. (5/5)

Trees secret

"Trees are all doing well so I'm sure this product has helped however the trees that appeared to be dying I specifically bought it for it definitely didn't turn their health around for the better but does seem to contribute to the health of my other trees that maintain good health"

Bradley D. (5/5)

This tree secret really works!

"I am a first year customer. . . didn't know what to expect. . . but WOW . . . this really works. I had 2 almond trees that were heading to the wood pile and this has brought them literally back to life. Also tried on 5 decorative crab apple trees that were also suffering and they bloomed so beautifully and were gorgeous. I am so glad I tried this JimZ product and will be ordering more for fall and next year. Thank YOU!!"

cheryl s. (5/5)

Q&A

is Tree Secret non-toxic to animals?
Tree Secret is all natural and toxin free. It is safe to use around animals and pets :) We hope you give it a try!
I have arborvitae and boxwoods in containers on my deck. Three are less than 1" thick - would I use a much smaller amount since they are in containers vs in-ground? Thank you!
When applying to trees that are in containers it is important to be careful and not over-apply. It is a good rule of thumb to apply at half rate and then reapply if needed. Hope this helps!
I have a massive hedge of 4 10 ft tall by 6 ft wide yews that are around 40-50 yrs old. Since they are almost like trees, would I use the shrub measuring guide or the tree measuring guide to determine how much fertilizer to apply?
It would be best to measure them as you would a tree :) Hope this helps!
Hi, My Tree Secret bottles are in my shed. The weather got down to between 10 and 32 for several weeks this year (Zone 8A, Memphis, Tn 2024-25) will they still be useable. I want to feed my trees in a couple weeks.
Absolutely! Tree Secret can freeze and get hot without any problems. The nutrients are good for 3 years :) Hope this helps!
What is the dosage for white pines and balsams at mature stage. I have 36 trees. (tree secret)
The amount needed for best results depends on the diameter width of the tree trunk 4' up from the base of the tree. Use 1 cup per caliper inch of tree trunk (diameter), mix with water and evenly apply from the base of the tree to the drip line. Then water into the root zone. You will LOVE the results!

Frequently Asked Questions

What makes Tree Secret® different from other fertilizers for trees?

Most tree fertilizers on the market are either a general lawn fertilizer repackaged with a tree label or a granular fertilizer loaded with synthetic nitrogen that forces fast, weak growth. Tree Secret® was formulated specifically for what trees actually need. The 4-1-0 ratio delivers nitrogen along with sulfur, phosphorus, and available nutrients derived from all-natural sources like alfalfa and rock phosphate. Instead of thinning cell walls with chemical fertilizers, Tree Secret® feeds the microbes in your root zone so they can break down and deliver nutrients at a biological level, supporting stronger root growth, better nutrient availability, and healthy growth that lasts. That's why we consider it the best fertilizer for trees on the market.

Can I use Tree Secret® on shrubs, bushes, and fruit trees?

Absolutely. Tree Secret® works on all types of woody plants, including deciduous trees, evergreens, fruit trees, shrubs, and bushes. Plants and bushes need the same nutrition as slow-growing trees, so a single application of this complete fertilizer gives your entire landscape what it needs. Use it twice per year on stressed or dying trees and once per year for general maintenance. For larger trees, base your dosage on trunk diameter to make sure you're applying enough.

When is the best time to apply fertilizer for trees, and how do I know if my trees need it?

The best time for fertilizer application is in early spring when trees are coming out of dormancy and again in late summer or early fall to help them store nutrients before winter. Avoid fall fertilization too late in the season, as it can stimulate new growth that won't harden off before frost. For established trees, one to two applications per growing season is typically enough. If you're unsure whether your trees need additional fertilizer, a soil test is the best place to start. Your soil test results will show your soil pH and nutrient levels, so you know where the gaps are. Signs of nutrient deficiency include pale or yellowing leaves, stunted new growth, and a thin canopy. Tree Secret® is an excellent foundation for any tree care program because it delivers essential nutrients without the salt buildup that comes with synthetic options.