Stark® Raspberry Food

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Item #H1013, 1 Pound.
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Strengthen roots and boost yields! This specially formulated 20-21-20 raspberry fertilizer is recommended for use on new or established beds. Mix and dissolve 4 ounces of water-soluble fertilizer per 1 gallon of water. Use in early spring as directed for red, gold, purple and black raspberries. Package treats a linear 80-foot area.

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Questions & Answers

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Browse 21 questions Browse 21 questions and 84 answers
Why did you choose this?
Stark Bro's Store
My raspberries needed some help. Hopefully this works.
Rebecca P on May 5, 2021
I was satisfied with the results adding this to my raspberries last to develop my new row.
My bed looks great!
RACHAEL L. on Apr 12, 2021
My raspberries needed some help. Hopefully this works.
Rebecca P on May 5, 2021
Raspberries are hungry
Steven J on Apr 27, 2021
I was satisfied with the results adding this to my raspberries last to develop my new row.
My bed looks great!
RACHAEL L. on Apr 12, 2021
We got our first raspberry bushes!
Jessica M on Apr 2, 2021
I have a far more abundant raspberry crop with this fertilizer than with any other.
Janet G on Mar 30, 2021
This is the only Raspberry food that is tailor made for raspberries. It let us get the most amazing tasting & juiciest fruit! I kept track every day of how many raspberries we picked. We had a Summer crop & a Fall crop= over 4,200 raspberries! We think part of the reason is because of this raspberry fertilizer. We won???t use any other fertilizer on our fruits except for the one specifically designed for that fruit. We love the strawberry, blueberry & raspberry fertilizers from Stark!!
Jeanne M on Mar 21, 2021
To fertilize the raspberry plants that my family plans to plant this year.
Wayne H on Mar 12, 2021
seemed to make sense
Peter T on Feb 22, 2021
to have a great year for my purple raspberry's and the new ones I just purchased from you.
BENJAMIN L on Jan 22, 2021
I have a large patch of golden raspberries, and I have been using it for years.
Doug H on Dec 7, 2020
Need it.
Deborah B on Sep 13, 2020
just starting a raspberry garden and according to the description this will help
Cliff P on Jul 21, 2020
Starks fertilizers have worked well in past for me.
Beth C on Jul 13, 2020
I want to see how much it improves my plants
Alana B on May 23, 2020
Purchased in the past . Works great.
Cinda L Babik B on May 22, 2020
To feed my new raspberries
Farnklin Y on May 22, 2020
I've used this product before. I had really good results. I had a really good raspberry crop.
Kelly D on May 12, 2020
Want fertile room that will work well for the fruit
Melissa on Apr 25, 2020
I have some raspberry plants that I want to boost their growth and output, and this has some very good reviews, so I thought I would give it a try.
Laurie H on Apr 22, 2020
Used it before and we harvested 125 qts from our small patch of raspberries
Barbara K on Apr 20, 2020
Didn???t know you needed to fertilize rasberries
Stephen s on Apr 17, 2020
To produce a better cop of raspberries.
David M on Apr 14, 2020
I want to have a good crop for my son who loves raspberries and helps me in the garden.
MARIA P on Apr 6, 2020
I need some fertilizer to boost my raspberries.
Mary T on Mar 24, 2020
I have raspberry plants and I wanted something that was made for them and would give them a boost. I also liked that it made a lot of fertilizer with a little bit.
Naomi H on Mar 24, 2020
I needed a different type of fertilizer for my rasberries
STEVEN S on Mar 20, 2020
Hoping for a great harvest and healthy plants.
Theresa N on Mar 14, 2020
needed fertilizer compound mixed just for raspberries, tried standard mixed without much help
stella s on Mar 11, 2020
To get my raspberries off to a good start.
glenna d on Jan 9, 2020
I'm a new gardener and figured I could use all the help I can get!
Amy R on Nov 16, 2019
for a better and more bountiful production with bigger fruits
Susan S on Jul 24, 2019
Excellent reviews on this product. We live in a poor soil, high altitude area, and must heavily amend our soil with compost to produce anything but weeds, cactus and sagebrush. Want to try this product to see if the rave reviews hold true in our harsh climate.
Linda F on May 27, 2019
Raspberry plants seem to need a specific fertilizer formulation which this product provides.
Constace T S on May 16, 2019
I want my starts to do well right from the beginning.
Wendie S on Apr 29, 2019
I want the best start for the raspberry plants ordered through Stark this year...
Linda D on Apr 19, 2019
We used it before and had good results.
DAVID W on Apr 19, 2019
Reports that it works well
Malcolm on Apr 11, 2019
We had an abundant fruit production last year using this fertilizer.
Cynthia A K on Apr 3, 2019
Donald S on Apr 1, 2019
Recommended by Stark for my raspberries
Terry B on Mar 31, 2019
Great product!
Linda Z on Mar 30, 2019
I am struggling with my raspberry plants and I wanted to try your raspberry food.
KEVIN D on Mar 29, 2019
To get plants off to a great start
Doris N on Mar 24, 2019
I felt it would be a good start for my raspberries.
EDWARD S on Mar 13, 2019
For all my berry plants. I trust Stark Bros
Betsy B on Aug 4, 2018
I have one raspberry bed and am starting another new one this spring and want to feed them the best to increase health and yield.
Pat N on May 12, 2018
I want to ensure good growth for my raspberries.
Lisa J on May 10, 2018
This is the 5 or 6th year for my raspberries, and I grow them in a large patch. While I have gotten excellent harvests, I feel they need the extra boost this will give them.
APRIL R on May 1, 2018
Wanting to keep our black raspberry patch producing lots of berries for years to come.
David J on May 15, 2017
To increase yield. i love raspberries!
Linda D on Apr 21, 2017
Raspberries are hungry
Steven J on Apr 27, 2021
We got our first raspberry bushes!
Jessica M on Apr 2, 2021
How often during the season do you apply this product? Thanks
greasewood on Feb 23, 2017
BEST ANSWER: I applied this product only at the beginning of the spring . . .
What is best way to prevent weeds in raspberry beds?
Johnnie Vee on Feb 27, 2017
BEST ANSWER: We put a fluffy, non-compacted, 4-6" layer of straw (not hay!) across the raspberry bed. A few weeds came up but they had no solid ground to root into so they were simple to pull when they emerged.
Can this fertilizer be used on established beds? My plants are not producing...very little raspberries. This is an older bed. I'm planning to plant some Stark Latham raspberries in the spring, too. Thanks for your help!
Kathy on Nov 10, 2016
BEST ANSWER: Raspberries often benefit from heavy cultivation and pruning. Starks raspberry food has been doing very well for me. I also add a little compost each season.
Shall I put landscaping fabric in between the raspberry plantings?
Robert C on Oct 3, 2019
BEST ANSWER: If you don't want anymore plants, that's fine. Raspberry plants are known for coming up from the roots, or "sucker plants." This obviously creates more plants.
what are the main ingredients in SB Raspberry Food?
Lynn S on Mar 23, 2021
BEST ANSWER: The active ingredients are Nitrogen, Phosphoric acid and Potash.
Is food the same as fertilizer?
Lanie on Mar 11, 2021
BEST ANSWER: My understanding is that fertilizer is a general application. The Stark's raspberry food, is designed specifically for raspberries; mainly N P K. Hope this helps
How soon can you water after you use the fertilizer?
Leonard J on Jun 11, 2018
BEST ANSWER: I don't fertilize if we are having hot dry weather. I like the ground to already be moist through rain or watering. Mix the dry raspberry fertilizer with water according to instructions on package. After fertilizing, if it hasn't rained for 2 or 3 days you can water your raspberry plants. I use the raspberry fertilizer about 3 times in the Spring to early Summer. Very healthy plants with tons of berries. Have fun.???
How do I apply your fertilizer to black raspberries. Do I use a third of a gallon mix 10inches from in cluster and fertilize around each cluster 10inches away from the base?
Anita C on Apr 16, 2021
BEST ANSWER: I mix it as directed. My red raspberries, I do not have black raspberries, are in raised beds, I use a hand watering bucket and apply the mixture down the side edges of each side of the raised bed. I have had the raspberry beds for a few years now and have had great success with not only their fertilized but also the 15 original plants of five varieties that i purchased from Stark Bros.

Hope this helps.
Would this also work for blackberries?
Katie L on Jun 5, 2020
BEST ANSWER: This has more N-P-K than the blackberry fertilizer. It would work, just don't use the same amount you do on raspberries
What is the best way to apply the fertilizer?
Royce K on Mar 19, 2020
BEST ANSWER: We followed the mixing instructions on the package. We mixed in gallon jugs and poured it over the root area of the plants. We have only a 40 foot row, so this wasn't hard to do . I suppose you could use an applicator that attaches to your hose for a very large patch of raspberries.
How do you use the strawberry food, spray it on plants or water with it? Also can it be applied in summer for everbearing or day neutral plants?
Glenda M on Jun 29, 2019
BEST ANSWER: It dissolves in water. Pay close attention to the amount and frequency of fertilizer application in order to prevent overfeeding.
Does this product have an expiration date?
Amyh R on Sep 18, 2020
BEST ANSWER: We appreciate you reaching out to us. As long as the product is stored properly, it does not expire.
Do you package the raspberry food in any larger quantities?
Charlie on Sep 16, 2020
BEST ANSWER: This product is only packaged in a 1 pound package.
Rachel on Jul 3, 2020
BEST ANSWER: We appreciate you reaching out to us. No this is not organic.

If you have any further questions please don't hesitate to reach back out to us. Have a great day!
the leaves on my raspberry plants are turning brown and crispy . Leaf color not very green . What can be causing trouble ? over or under watering ? or disease?
Dr. Bob on Aug 20, 2019
BEST ANSWER: It could be any of those things, but it is most likely overwatering. If the soil feels moist, let the plant dry out, then water it deeply, then let it dry out between waterings. It could also be a nutrient deficiency, so we recommend you do a soil test to see if anything is missing.
I've used this on my raspberry bush and it's wonderful, can I use this for my honeyberry bushes?
Victoria B on Jun 10, 2019
BEST ANSWER: Yes, you can. Raspberries and honeyberries have similar pH and nutritional requirements. It should be quite effective.
Once applied, how long does this feed for? Thanks!
JPAYNE on Nov 16, 2018
BEST ANSWER: You only have to use this once in the spring, when the plants come out of dormancy.
can this be used for boysenberry plants too?
Kathy on Oct 1, 2018
BEST ANSWER: The Stark?? Blackberry Fertilizer formula would be closer to what you would need for boysenberries. I tried it for the first time this year in my home garden and really noticed a difference. Here is a link to that page: //
Is it necessary to weigh this product on a scale to four ounces as stated on the label or can one estimate that 1/2 cup per gallon is four ounces?
Luigi on Oct 2, 2017
BEST ANSWER: Yes, a half a cup is oz . Either way works
How much is too much? I mixed up a gallon and poured it along my one row (`~20 ft) of 6 raspberry plants. It didn't really saturate around the plants, but I don't want to overdo it!
Lindsey on Apr 11, 2017
BEST ANSWER: You're good! That is exactly the right amount. The next rainfall or watering will distribute the food down further into the soil. One gallon of solutions treats a 20' row, so you are spot on.

Customer Reviews

4.9 / 5.0
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
200% growth
I used this product, applied it according to instructions. Nothing has ever worked as good. My plants tripled in size and I have harvested more berries this year than the last 4 years combined. Plants not only showed good growth but new shoots are sprouting everywhere.
June 16, 2016
over 5 years ago
Raspberries are freakin' out - great stufff
I put in 6 bare-root plants from Stark last year in an amended bed. I had berries in Sept. used this food this spring, and the plants are going crazy with new growth.
May 21, 2016
over 6 years ago
Hold on Tight!
This fertilizer really kicks into high gear about 2 weeks after application. My Raspberries are giving me about a quart a day right now, some canes are as tall as I am.
August 7, 2016
over 6 years ago
Must have helped
Must have helped as my Jersey Raspberry plants produced tons of berries. This was my first time planting and I did nothing but feed the plants. Oh yeah....I also ate a ton of berries as a result!
May 12, 2016
over 6 years ago
Big Spring Kick....
I just planted new bare root raspberry plants. I gave them Stark's Raspberry Plant Food at planting. All 6 different cultivars, a total of 24 plants have taken off.
I will use this product in the future.
May 20, 2016
over 5 years ago
this product is great
I used the raspberry food early this Spring on my two rows of raspberries (about 80 feet long). We had the most incredible harvest of raspberries this year! We made so much jam, juice, pie, vinegar, and froze a ton of berries. We almost couldn't use all of the harvest - there was so many berries! I will use this product every year.
August 25, 2016
over 5 years ago
Raspberry Foood
I use the raspberry food every spring and always have wonderful crop of raspberries.
March 18, 2016
over 5 years ago
Rasberry food
the best I have ever used, it is responsible for an increase of production of 50%
August 11, 2016
over 4 years ago
Grow great raspberries
We have fifty plants of raspberries and use this product every spring. Very healthy plants, Five feet tall, makes for easy picking, abundant berries for us and neighbors for fresh, canning and jam. It works.
January 26, 2020
over 4 years ago
Raspberry food worked like a charm. I had the biggest berries on the east coast!
May 7, 2017
over 5 years ago