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?

Overall rating: 4.8846455 / 5 from 1283 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","work","summer","water","order","price","trees","growth","fertilizer","leaves","difference","plants","change","bushes","branches","foliage","evergreens","application","fall","fruit"].

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)

This is my second time

"This is my second time using it. I have a few trees that have some brown spots. Last year I believed it cleared them up so I'm doing it again this year. So far, I have spots but it's only been a week since I used it. I like the products and believe they work. I never give reviews. Now if you send me a coupon based on taking this time, that will make 6 stars."

David S. (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)

Amazing!

"When I first read about Dr JimZ Tree Secret I wasn’t sure it would really work but now I realize I should have started using a lot sooner! I used it on ten trees total and I can’t believe how much better they look. They have tons of new growth and look much healthier than in past years. I will be applying again for sure!"

Ty H. (5/5)

Happy Plants, Happy Gardener.

"I am transitioning away from chemical fertilizers. The early results of the bushes I fed look promising. Too early to see results on my fruit trees. The garden seedlings have greened up. Things look promising. . too early to tell. . More later."

Richard G. (5/5)

It’s ok

"Purchased this product last year to save a tree. The tree didn’t die but it didn’t grow from it either so we had to just replace the tree. On the positive side the flowers around the tree thrived so this year I purchased the bloom kaboom and I am loving the results on my flowers."

chris s. (5/5)

I used this per directions

"I used this per directions on my green thujas that were hungry coming out of winter stress. I did not see any benefit to the trees , in fact three of them died , turned brown and dried up to top . I had high hopes but it was a big fail for me ."

Christopher K. (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)

Great results

"Tree Secret is a fantastic remedy for my newer trees. The Maples and Poplars were growing slow and lacked well formed branches and foliage. After 2 feedings, the trees are alive and growing strong and full! Thank you for this wonderful product!! I’ll be purchasing more next Spring!"

Joyce C. (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.