Nutritional supplements for soil.

learn more… | top users | synonyms (1)

5
votes
4answers
7k views

Are chemical fertilizers poisonous to people or animals?

I've been seeing a lot of conflicting information online about chemical fertilizers being poisonous and was wondering if there are any trustworthy sources of information to definitely answer this ...
5
votes
1answer
401 views

At what point do seedlings start to need nutrients? [duplicate]

A seed has all the food it needs to germinate so water is enough to make it grow, after that though, at what point are minerals and other nutrients needed? I suspect the time would depend on the type ...
5
votes
1answer
295 views

Can excess NPK fertilizer damage my container-grown plants?

I live in an apartment building, and all my plants grow in pots or small flower beds. Since I moved here, 7 years ago, I have only watered the pots and revolved the "soil", eventually adding more ...
5
votes
1answer
136 views

Can I use sweet potato leaves as a dynamic accumulator?

I have been thinking about growing Comfrey in my garden but I came across several articles mentioning that once it is in your garden, it is there forever because if you cut the roots, it grows like a ...
5
votes
2answers
366 views

Does fish emulsion (or another foliar feed) work as a foliar fertilizer on needle leaved evergreens?

I know how fish emulsion works as a foliar spray on deciduous shrubs, but will it work on needle leaved evergreens such as mugho pines and junipers? If not, what should be used for comparable result? ...
5
votes
3answers
384 views

How do I recover from an over fertilized yard

Last summer I decifded to create a lawn and brought in top soil and planted grass seed. After six weeks, I spread fertilizer and then my grass turned yellow. I didn't water as much as I think I should ...
4
votes
3answers
160 views

Is it OK to use human waste or spent cat litter for fertilizing edibles?

Is it OK to use human waste or spent cat litter directly into the soil where you grow fruits and vegetables?
4
votes
2answers
600 views

Why is my Japanese painted fern struggling?

I bought a Japanese painted fern several weeks ago. It was on the store's "reduced price" shelf, so it wasn't in perfect shape, but I figured I could try to nurse it back to health. So far, though, ...
4
votes
2answers
111 views

When should I first use fertilizer on new plants?

In general, when is the right time to feed new edible plants fertilizer that you've planted from seed? After they've sprouted a bit?
4
votes
2answers
1k views

Can I give sugar (or something similar) to flowering plants?

I was wondering if it's possible/advisable to give a flowering plant or any plant for that matter, sugar (or something similar) in addition to plant food?
4
votes
2answers
141 views

How does Guano improve plant life?

I'm interested in the use of Guano as a plant fertilizer. Are there only specific plants to give this to? Also, how much and often is it necessary? I mix organic compost every 2 - 3 months for my ...
4
votes
2answers
472 views

How much nitrogen per bale in a straw bale garden?

I recently read a NY Times article about straw bale gardening. It says that you should add about 2 1/2 cups of 20% N fertilizer or three pounds of blood meal and feather meal per bale. Add water, wait ...
4
votes
1answer
218 views

Why can't you get organic fertilizers in powder form?

I'm just wondering why most of the organic fertilizer are in granules. Yes, fish emulsion is liquid but there are no organic fertilizer is in powder form. Wouldn't it be easier if they crush the ...
4
votes
1answer
182 views

What exactly happens to potting soil if it is stored for a long period of time?

The story: I have bought a few sacks of "Plagron Royal Mix" here in Chile. This soil is supposed to be sufficient for my "tomatoes" for roughly six weeks. After four weeks in the soil I noticed ...
4
votes
2answers
495 views

What are good organic phosphorus sources for fruiting plants, other than rock phosphate or animal products?

I know the norm is to use rock phosphate or bone meal but I can't find rock phosphate in my area and it's expensive to ship because of the weight. I'm not able to use an animal product like bone or ...
4
votes
2answers
11k views

How can I get lemon trees to bear fruit?

I have a couple of lemon trees (small plants really) in my garden. But they seem to grow at an awfully slow pace.They are about 2 years old & about 3/4 ft in height. I have seen pictures of lemon ...
4
votes
1answer
79 views

How should I add spent coffee grounds to Azaleas?

My garden has rocks and weed fabric. Must I remove both and add the grounds to the soil or can I just add on them on top of the rocks?
4
votes
1answer
96 views

Is this a good organic soil/fertilizer setup for container carrots?

I am growing 36 carrots in a 18" square container that is 14" deep. I know I have enough room for them but am more worried about whether there will be enough nutrition in the soil to carry them ...
4
votes
1answer
46 views

Is there fertilizer management web site available?

Does anyone know if a fertilizer management web site is available? I'm looking for a site where I can enter my plant/tree collection and the fertilizer that I use on each and let it know when I last ...
4
votes
1answer
370 views

How should I care for my Calendula?

I have a small Calendula plant indoors and it is growing quite well. However, can I care for the plant better by following any specific care instructions? At the moment I'm just giving it plenty of ...
4
votes
1answer
300 views

Would this citrus fertilizer be suitable for chili peppers?

I bought a bottle of organic fertilizer which is in liquid form. The instructions are in German but the merchant here labeled it as "organic fertilizer for fruit" so I just bought it. Now I found out ...
3
votes
4answers
125 views

Is 'fertilizer' considered FOOD for plants?

Plants seemed to have thrived for millions of years without any fertilizer being added. Why can't I just not use fertilizer?
3
votes
2answers
549 views

How to save my plants after fertilizer overdose

Yesterday we accidentally put too much fertilizer into our pots. Today the leaves start to turn brown. Is there any way to save them? Some details: We have two pots - one with basil, one with ...
3
votes
3answers
463 views

Fish fertilizer for my lawn

I was told by someone that fish fertilizer is good for the lawn; just use 3 tablespoons in a gallon of water and apply it to the lawn. But how many gallons should I use for a lawn that's about .3 ...
3
votes
3answers
242 views

Can I use 12-6-9 fertilizer sticks for a Ficus Bonsai?

I have a bunch of plant food sticks described as "compound organic and inorganic NPK 12-6-9 fertilizer with micronutrients for ornamental plants". I wonder if this is suitable for a Ficus (Ginseng?) ...
3
votes
1answer
5k views

A visual reference to nutrient deficiencies in plants [closed]

Often times we cna look at the leaves of a plant to determine what nutrients are missing in the soil which the plants need. It would be nice to have a repository of images with accompanying ...
3
votes
1answer
47 views

Different fertilizer ratios suggested for golf courses and home lawns?

I was reading this article about care for seashore paspalum turf - http://www.environmentalturf.com/images/maintenance/finalmanual.pdf. At about page 22 (of the document, not the PDF), they start ...
3
votes
1answer
49 views

Is there a directory of precise dosages of fertilizers for indoor/outdoor plants?

For example, I have a lot of plants inside (African violet, geranium, coleus, etc.) and outside (dolichos, petunia, pansy, asters, etc.) my home. Also, I have a lot of chemicals (such as ammonium ...
3
votes
1answer
59 views

What's the difference between each fertilizer grade?

I've heard of at least a few different grades of fertilizer: Horticultural Grade Greenhouse Grade Solution Grade Agricultural Grade Farm Grade Fertilizer Grade Are these standards? Where are they ...
3
votes
1answer
209 views

Why does my gardenia have brown patches on it's leaves?

This plant has been growing normally for a while but I woke up this morning to discover brown patches and some shriveled leaves. I had previously sprayed it down with fungicide and then with ...
3
votes
1answer
266 views

Can frog droppings be used as fertilizer?

In the context I am thinking, I would essentially be mixing the droppings into the topsoil in a plant bed. How much would be too much? How much would be too little to make a difference? Nutrient ...
3
votes
1answer
253 views

How to fertilize when planting veggies?

I got something called dr earth and I was going to drop a handfull in at the bottom of the hole before I planted. Would it be beneficial for me to throw some steer manure in there as well? I had my ...
3
votes
1answer
137 views

What should I do before applying organic fertilizer to ensure no bugs or smell?

Does all organic fertilizer require decomposing? I would like to focus on fertilizer available in gardening shops instead of unprocessed urine or manure from mammals. As far as I know, decomposing of ...
3
votes
1answer
3k views

Which organic fertilizer should I use to encourage flower growth?

I heard that some plants need fertilizing every two weeks in order to encourage flowering. I prefer organic fertilizers because I feel they provide better nutrients, however they are in granules and ...
3
votes
1answer
78 views

Apply iron(II) sulfate and dolomitic lime at the same time?

I have had good experiences with iron(II) sulfate and dolomitic lime for my lawn. They increase the green colour and prevent moss. However, I am uncertain whether I should avoid applying these two ...
3
votes
1answer
92 views

Milk powder (for automatic coffee machines) as fertilizer?

I have plenty of out-of-date milk powder for automatic coffee machines (powdered skimmed milk obtained through hot air drying followed by agglomeration process; sole ingredient: powdered skimmed ...
2
votes
2answers
103 views

What's the best N-P-K ratio for Norfolk Island Pine?

What's the best N-P-K ratio for fertilizing Norfolk Island Pine? According to this article I should go with 10-10-10. Is it a good combination? Also, how should I apply it? Should I spray it on, or ...
2
votes
2answers
166 views

Do herbs grown in containers need to be repotted?

I'm trying to grow some herbs (basil, coriander, and chives) in pots on my kitchen windowsill. This seems to work pretty well for a while, but usually they die after a little bit (well, the basil ...
2
votes
1answer
942 views

How can I save my dying palm tree?

My palm tree started to become yellow in the last couple of months and I don't see any improvement. I've tried with some spike fertilizers for palm trees, but didn't seem to help. Here are some ...
2
votes
1answer
67 views

How do I feed shrubs sitting in mulch?

My flower beds have landscaping fabric covering them, with 2-3 inch depth of mulch sitting on top. Are there any ways to feed my plants that don't require me to remove the fabric and mulch? Up until ...
2
votes
1answer
61 views

What kind of fertilizer should I give to an average mature shrub?

I've got a decently mature shrub in the backyard that is about 10 foot tall. It is starting to bloom with pinkish flowers. I'm wondering what kind of fertilizer should I give it for early spring. ...
2
votes
1answer
22 views

Will foliar sprays affect bioavailability of nutrients in soil and vice versa?

Calcium nitrate is a nitrogen fertilizer that can also be used to give plants calcium. I've read that you shouldn't combine calcium nitrate with sulfates and certain kinds of phosphorus (I believe ...
2
votes
1answer
123 views

How to save tree harmed by urine?

Is it possible to save trees that are harmed by dog urine? I have some young trees which died some time ago, and at first I didn’t understand why that happened. But it happened very suddenly. The ...
2
votes
2answers
216 views

Why aren't my young plants growing, even with proper nutrition?

The top picture is a gardenia plant I purchased back in February of this year. It looks healthy, and the leaves are all green, but for some odd reason, it remains the same height, and nothing much has ...
2
votes
1answer
29 views

Can I fertilize solely through fertigation?

I'm growing a pumpkin patch and plan to use drip irrigation under a mulch layer. Unfortunately, various parts of the soil are lacking in some nutrients. I don't think I'll have the money (this year) ...
2
votes
1answer
76 views

What can I do this spring to help my new lawn?

I live in Maryland, and I expanded my back yard last fall by clearing some trees and leaves. I brought in top soil and tried to smooth out the contour also. After seeding, I had areas of success and ...
2
votes
1answer
280 views

Can I use an NPK compund fertilizer on herbs?

I have some "Low nutrient NPK compound fertilizer" which is sold as Citrus Food left over from a Calamondin tree which has sadly passed away. Can I use this fertilizer on my herbs? They are basil, ...
2
votes
0answers
56 views

Why is my lucky bamboo turning yellow? [duplicate]

I have a wrapping of bamboo stalks, maybe 20 or so stalks tied together. 3 or 4 stalks have died one at a time the past 2 months - they start to get yellow-greenish, then more yellow over time. The ...
2
votes
3answers
180 views

My potting soil is being overrun by soil insects. How do I get rid of them? [duplicate]

I am having a hard time getting rid of insects in my potting soil. My plants are droopy. I have applied a good amount of diatomaceous earth to all of them, even to the roots, but these insects don't ...
2
votes
1answer
90 views

What is the maximum amount (lbs/1000 sf.) of nitrogen that should be applied to turf in the spring?

Assumptions and details: we would apply slow release, predominantly insoluble, organic sources of nitrogen which could include compost, corn gluten meal or any of a number of organic turf fertilizer ...