Earthbox fertilizer question
What fertilizer's do you all use with your Earthboxes? I only have organic fertilizers, but
the earthbox instructions says they need to be between 5-15. All of mine are below 5. I will probably experiment between the synthetic and organic, if I can find an organic above 5. Another question. I know I sound like a newbie, but pro-mix is too expensive to use in my earthboxes. I bought a potting mix called Just Natural. I hope it will work well. It does have worm castings, but probably not much that I have to worry about it. My local Wal mart is selling it for almost $10 1 cubic foot, online for $6.77. I found it at Southern States for $4.57 1 cubic foot. |
Earthbox's [URL="https://earthbox.com/faqs"]faq[/URL] says
[I]"What kind of fertilizer does the EarthBox need? Each time you plant in the EarthBox, use 2 cups of a dry, granular fertilizer or plant food for vegetables (use 3 cups if the fertilizer is organic). The three numbers of the elements making up the fertilizer content (NPK) should be in the range of 5 to 15 (i.e.12-8-10, 10-10-10, 6-8-10) for non-organic fertilizers. "[/I] and [I]"Can I use organic fertilizer? Absolutely! Many EarthBox gardeners prefer growing their plants organically. We have recommended several brands of dry, granular organic fertilizers that can be used by placing 3 cups of organic fertilizer, in the form of a strip, in the EarthBox."[/I] I use whatever fertilizer is on sale with the appropriate NPK (which happens to be[URL="https://www.ecoscraps.com/collections/plant-foods-liquid-fertilizers/products/natural-organic-rose-and-flower-plant-food"] Ecoscraps' Rose and flower food[/URL], lower N level and was on clearance). We need to keep in mind that the NPK numbers are what is immediately available to the plant, so when they say two (or three) cups, and a cup is mostly around a pound; then we are just taking the numbers up to the conventional fert numbers. I agree, Promix is expensive and I regret using peat (mixed my own). I have used the Just Natural but as regular in planter potting mix. With hand watering, I think the plants didn't get the aeration they needed. If I could start again I would buy a [URL="https://www.amazon.com/Roots-Organics-Compressed-Fiber-Fertilizer/dp/B00IGFGNMU/ref=lp_3040461011_1_4?srs=3040461011&ie=UTF8&qid=1490660488&sr=8-4"]Coco Coir brick[/URL] and get pearlite from Home Depot. No more adjusting pH with lime :) |
I used Espoma Plant Tone last year in mine, and that's a 5-3-3. Worked fine for me.
It was my first year using earthboxes, and I did not use them to grow tomatoes, but the kale, pole beans, bush beans, and peppers did extremely well. I did give them a little extra Texas Tomato Food every couple of weeks down the watering tube. (Even my banana tree loves Texas Tomato Food!) |
I use Tomato Tone, and ProMix BX, which is $26 for a 3.8 cu ft bale, and it will fill 3 Earthboxes. Keep in mind, you are re-using it year after year, and only adding about 1/5 more after you dig out the old fertilizer strip.
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I'll go buy some Espoma at Home Depot.. That's a good deal for pro-mix. Here in Virginia Beach,
everything is expensive. The cheapest pro-mix I can find is 38.99 for a 3.8 cu ft bale. |
I found this for the Espoma Tomato Tone online.
[url]https://www.idealtruevalue.com/store/p/131077-18-LB-3-4-6-Tomato-Tone-All-Natural-Produces-Plum-Juicy-Tomatoes.aspx?feed=Froogle&gclid=Cj0KEQjwk-jGBRCbxoPLld_bp-IBEiQAgJafte4-uPDJdnEnCGLI1fYEhXUcCNg5KT9yZVxpBTFzhVsaAlgY8P8HAQ[/url] |
[QUOTE=roper2008;627981]I'll go buy some Espoma at Home Depot.. That's a good deal for pro-mix. Here in Virginia Beach,
everything is expensive. The cheapest pro-mix I can find is 38.99 for a 3.8 cu ft bale.[/QUOTE] That's what it is here in NY also. The promix is very compressed, once released it is about 6 cu ft. so works out about the same as if I had bought the bags at the big box stores. |
I dont grow in earth box's so I dont give advice on things I do not do for the most part.
But here is what I feel is the best way to go about it. Organic is the best way to go because the situation kin the earth box does not allow for flushing of salts from what I can tell. The numbers on organic are not the same as the artificial fertilizers as far as the NPK goes the organic will go a longer. Hard to explain because I dont understand it. |
I don't like organic in EBs for a variety on reasons. Primary one being in my very hot arid climate the micro herds are subject to die off so the tomato plants which are heavy feeders starve regardless of how much granular you have added, and, in my experience you need to add a lot more than 3 cups organic. Actually guy who worked for Epsoma was posting on EB forum for a while and he said he started with 5 cups total, some TTone and Some BioTone and then supplemented. The cost of continuing to add micros and additional available foods is too pricey for me!
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[QUOTE=shatbox;627904]Earthbox's [URL="https://earthbox.com/faqs"]faq[/URL] says
[I]"What kind of fertilizer does the EarthBox need? Each time you plant in the EarthBox, use 2 cups of a dry, granular fertilizer or plant food for vegetables (use 3 cups if the fertilizer is organic). The three numbers of the elements making up the fertilizer content (NPK) should be in the range of 5 to 15 (i.e.12-8-10, 10-10-10, 6-8-10) for non-organic fertilizers. "[/I] and [I]"Can I use organic fertilizer? Absolutely! Many EarthBox gardeners prefer growing their plants organically. We have recommended several brands of dry, granular organic fertilizers that can be used by placing 3 cups of organic fertilizer, in the form of a strip, in the EarthBox."[/I] I use whatever fertilizer is on sale with the appropriate NPK (which happens to be[URL="https://www.ecoscraps.com/collections/plant-foods-liquid-fertilizers/products/natural-organic-rose-and-flower-plant-food"] Ecoscraps' Rose and flower food[/URL], lower N level and was on clearance). We need to keep in mind that the NPK numbers are what is immediately available to the plant, so when they say two (or three) cups, and a cup is mostly around a pound; then we are just taking the numbers up to the conventional fert numbers. I agree, Promix is expensive and I regret using peat (mixed my own). I have used the Just Natural but as regular in planter potting mix. With hand watering, I think the plants didn't get the aeration they needed. [B]If I could start again I would buy a [/B][URL="https://www.amazon.com/Roots-Organics-Compressed-Fiber-Fertilizer/dp/B00IGFGNMU/ref=lp_3040461011_1_4?srs=3040461011&ie=UTF8&qid=1490660488&sr=8-4"][B]Coco Coir brick[/B][/URL][B] and get pearlite from Home Depot. No more adjusting pH with lime :)[/B][/QUOTE] Earthbox switched to using Coco Coir bricks with their ready to go EB packages a few years ago and it was a big failure. Most reported lots of problems and EB went back to the peat based product. |
I have also tried coco coir- it was awful.
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I think you got to rinse the Coir to get the salts out. The pre-rinsed coir is REALLY expensive. The hydro store told me to rinse the bricks until the water came out clear. I used the blue Walmart bags for that and elevated it to make sure the water was clear. At one point I left them outside for the rain to wash them for over 6 months.
---- On Tomato Tone, it says to use 2 Cups per cubic foot; so that would be 4 cups for an Earthbox. In the fall, I used the 4 C of TT and Plant Tone combo - then I switched over to just using Master Blend liquid solution. Because of this, I am really concerned about using my mix again. ProMix by me is really expensive as well - $41 + 7% tax. I'm testing an EB now with a 1.5 Cubic Foot of Lamberts Potting Mix - nice and light - no junk, decent size Perlite. It was <$8 at Walmart. To save $$$$$, I'm thinking of forgoing the LOAF. I stopped using the EarthBox covers (ran out) and have been using White Compactor Bags - about $.30 each. I then found I don't need to double up on them so can get 2 EB on the same bag making it $.15 each. Then Marsha gave me a link where the guy stuffs the cover underneath. I've done this twice now with the compactor bags. So if I can fill an EB without the Loaf with 1.5 Cubic feet that would reduce the mix cost by 25% no matter what I used. Any thoughts about forgoing the loaf? |
I use trash bags and tuck also, which I think Garden Doc on EB started doing and it works fine. The loaf does add to the total amount of growing media available but I think one of the main reasons was to insure a tight fit for the shower cap cover which EB sold.
In my experience using synthetics both solid and liquid there is white stuff (salts) which rise to the top of my growing media. I always scrape that off and whatever I can find of the old fert strip. and then prep box for replant. Its been 8 years for some of them now. |
[QUOTE=Sun City Linda;628088]Earthbox switched to using Coco Coir bricks with their ready to go EB packages a few years ago and it was a big failure. Most reported lots of problems and EB went back to the peat based product.[/QUOTE]
I think the key to coir is getting the best brand you can afford, always using that brand, rinsing, and of course getting the perlite ratio dialed in. Also Sun City Linda, I wanted to start using masterblend too and was thinking of putting the EB up on blocks to drain into buckets every once in a while to rinse salts out but as I type, it's sounding less and less appealing. Barb, is the loaf to run rainwater off the EB so it doesn't pool? |
Well I'm just going to buy 3 bales of pro mix bx. It won't be so bad if I only have
to replace 1/5 of the soil in each earthbox. Home Depot was out of tomato tone. I did buy another organic fertilizer that is 5-5-5. I going to put peppers and eggplant in my earthboxes. |
[QUOTE=shatbox;628100]I think the key to coir is getting the best brand you can afford, always using that brand, rinsing, and of course getting the perlite ratio dialed in.
Also Sun City Linda, I wanted to start using masterblend too and was thinking of putting the EB up on blocks to drain into buckets every once in a while to rinse salts out but as I type, it's sounding less and less appealing. Barb, is the loaf to run rainwater off the EB so it doesn't pool?[/QUOTE] Yes that I what the loaf is for but since I've been using the compactor bags as covers with tucking them in, pooling water isn't a problem. I've been just using the masterblend formula for months so what difference does it make if they got rain water since the fertilizer strip is long gone. I already bought the bags for solarizing the mix in the summer and bought this [URL="https://www.amazon.com/gp/product/B001IA1P0A/ref=oh_aui_detailpage_o04_s00?ie=UT"]https://www.amazon.com/gp/product/B001IA1P0A/ref=oh_aui_detailpage_o04_s00?ie=UT[/URL] to eliminate the salts, but that is sounding like too much work. |
[QUOTE=Barb_FL;628141]Yes that I what the loaf is for but since I've been using the compactor bags as covers with tucking them in, pooling water isn't a problem. I've been just using the masterblend formula for months so what difference does it make if they got rain water since the fertilizer strip is long gone.
I already bought the bags for solarizing the mix in the summer and bought this [URL="https://www.amazon.com/gp/product/B001IA1P0A/ref=oh_aui_detailpage_o04_s00?ie=UT"]https://www.amazon.com/gp/product/B001IA1P0A/ref=oh_aui_detailpage_o04_s00?ie=UT[/URL] to eliminate the salts, but that is sounding like too much work.[/QUOTE] Barb what bags for you use for solarizing? I get the clear ones from HD, but they are kind of thin. |
I use these and have never seen them at that low price. Usually $34+
[URL="https://www.amazon.com/gp/product/B004TCUVSG/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1"]https://www.amazon.com/gp/product/B004TCUVSG/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1[/URL] |
Barb, thanks for that link, I just ordered 2. Is the 3 mil thickness good enough to not disintegrate? You should put that in the Florida thread too.:)
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Been reading this thread - Just replanted my earthboxes yesterday. Never occured to me to use bags for covers. I will try that next time - Thanks!
Right now I use Garden Docs method heavy construction plastic - it is kind of a pain to wrestle it on and tie it around, but it does last a long time. On an interesting note - Garden Doc gave an hour long lecture on his earth boxes here a few weeks ago ( he said he has 133 of them in his back yard). He said he stopped using the tuck method because here in Mississippi it give a place for weeds to accumulate and grow. I did like the idea of rain water collection, which was his original goal. |
Interesting thread here...I never knew the potting mix in EBs could be reused! I'll have to try that. But does it really have to be solarized each year before reusing?
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[QUOTE=peebee;628831]Interesting thread here...I never knew the potting mix in EBs could be reused! I'll have to try that. But does it really have to be solarized each year before reusing?[/QUOTE]
It's safer to do that. But Solarizing is super easy. Just take off the plastic cover, and wrap the whole thing in a well sealed heavy duty CLEAR plastic bag. Barb_FL, our resident scientific trailer, experimented with temps on clear vs black plastic solarization, the clear got about 20 degrees hotter. Clear let's the light through, black absorbs it. Classic greenhouse effect. Barb is one of my hero gurus. :) |
Has anyone used 13-13-13 in EB's?
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They tell you not to go higher than a 10-10-10.
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[QUOTE=ginger2778;628848]It's safer to do that. But Solarizing is super easy. Just take off the plastic cover, and wrap the whole thing in a well sealed heavy duty CLEAR plastic bag. Barb_FL, our resident scientific trailer, experimented with temps on clear vs black plastic solarization, the clear got about 20 degrees hotter. Clear let's the light through, black absorbs it. Classic greenhouse effect.
Barb is one of my hero gurus. :)[/QUOTE] So, then it has to be solarized the whole summer. I would need more earth boxes for that, to be able to rotate them. |
[QUOTE=roper2008;628940]So, then it has to be solarized the whole summer. I would need
more earth boxes for that, to be able to rotate them.[/QUOTE] 4 weeks minimum, up to 6 weeks. It's not a have to, just a highly recommended thing. |
Just seeing this thread again. Marsha - That 3 ply plastic lasts throughout the summer. Most bags were in such great shape afterwards, I tried using them again the next year. Then they split but still lasted over a month.
Ropper - I can solarize 2 EB contents in 1 EB. I don't solarize anything I'm going to remove afterwards; I press down really hard to fill up the EB - way more than I do when I use them for growing. I have a HUGE loaf going. I also grow in Root Pouches and found solarizing ONLY in the EB is a lot cleaner and easier. Marsha - we do have an advantage re: solarizing since we don't grow anyway in the hottest months. |
I've solarized my garden beds 2 years in a row, so doing the EB will be a lot easier. Only thing is, I would hate to cook the earthworms I find in the bottom of the mix, so I think I will dump it all into a large clear thick bag and remove the worms first. By solarizing in a bag rather than in the EB will be simple for me as I only have 1 to do, and I can flatten it out and that would mean it might work in as little as 2 weeks of constant hot sun right?
I have 3 new EBs that I will have to fill now, so I will solarize the 4th old one and plant some eggplants around the end of this month. Busy busy busy. :D |
I've never solarized my EBs either. Maybe give it a try.
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50 lbs dog food bags work for solarization too.
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