Questions tagged [fertilizer]

Nutritional supplements for soil. Use this tag with questions about how to use or how to choose fertilizers for specific plants.

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1answer
23 views

How to deal with nutrients reacting with each other

I did a soil test and as expected my sandy soil came back low in almost everything but calcium with 8.4 pH and very low organic matter. I'm not worried about micronutrients as I could probably foliar ...
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1answer
21 views

Can Magnesium sulfate be mixed with NPK

Does magnesium compete with Potassium? I see several fertilizers that have Potassium and Magnesium at the same time, so I'm wondering if I could safely mix magnesium sulfate with an NPK fertilizer. ...
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0answers
13 views

How to make DIY coated grass seeds?

Coated grass seeds seem to germinate faster and more reliably, but are of course more expensive. Reading an article Seed Coating - Science or Marketing Spin I am wondering whether there is any proven ...
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1answer
47 views

Tomorite dilution

The bottle of Tomorite says 20ml should be diluted into 4.5L of water for use on 2 plants. 4.5L of water for 2 plants is more than I'd usually give. Would it be OK to quadruple the dose but also ...
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1answer
38 views

My indoor strawberry plants stopped producing runners, could fertilizer be the reason?

I germinated some strawberry seeds from strawberries that I bought from the fruit guy on the corner sometime in October of last year. Once the plants got big enough to flower, they started producing ...
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0answers
16 views

Does boron require chelation in alkaline soils

My soil test shows 0.4ppm Boron which puts its into the deficient category. I have few Mango seedlings and mature pear trees that show Boron deificiency. I tried foliar feeding but I would love to ...
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1answer
22 views

Can foliar feeding immobile nutrients benefit new growth

In many articles that I read about correcting nutrient deficiencies, I noticed that very often foliar feeding is suggested as an option, even for immobile nutrients deficiencies. How does that help ...
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1answer
33 views

Difference between different forms of Potassium Sulfate

What would be the differences between potassium sulfate in its granular form versus the water soluble almost-powder form. As it's the same chemical formula, I'm mostly interested in the release time, ...
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0answers
14 views

Which fertilizers do best at reducing the uptake of sodium?

I use tap water for irrigation which comes with a decent amount of Sodium. I would like to reduce the soil salinity with adding Potassium and Calcium. I have an alkaline soil with a pH of 8.4. When it ...
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2answers
30 views

Will Potassium Oxide reduce uptake of Sodium as much as Potassium Nitrate

I recently read that the potassium cation (K+) can reduce or prevent the uptake of sodium. I was wondering when a fertilizer lists Potassium as Potassium Oxide, will it have the same blocking effect ...
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2answers
76 views

Injecting zinc fertiliser directly into plant roots

I am facing an unusual problem. The soil concentration of heavy metal cadmium (Cd) in my garden is high. Getting cadmium out of the soil is a tricky and long term process, and the quick solution is to ...
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1answer
33 views

How can I remove the oil from my soil and grow new grass

I just moved into a new home that used to have an above-ground pool in the backyard. A guy mentioned that they might have put oil on the ground to prevent weeds from growing underneath the pool so ...
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1answer
69 views

Why are my hydroponic herbs turning purple after changing fertilizer?

I replaced my depleted liquid Aerogarden fertilizer with 3-3-2 AgroThrive Organic General Purpose Liquid Fertilizer. I maintained the same feeding regimen: two capfuls every two weeks. My herbs are ...
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0answers
21 views

Do Agriform tablets work well for existing mature plants & trees?

My landscaper used Agriform tablets as fertilizer when he planted trees and plans in my landscape. It has been ten years and time to fertilize the plants and trees again. I have a choice of using ...
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2answers
17 views

Is applying fertilizer to newly planted rootball laurel bushes a good idea?

I've recently planted some medium size (about 4' or 1.25m) root-balled cherry/common laurel bushes. Some are looking a little unhappy a couple of weeks later and I wondered if applying some balanced ...
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3answers
71 views

Need help interpreting my soil test results and fertilizer recommendations

The guy from the lab told me to use 13-13-13 fertilizer. my Lawn is 4000 sq feet, 1 (8 pounds/1000 sq ft) in April and 1 in May end. And then 1 each in September and October end. Also, use liquid ...
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1answer
62 views

Can I use seeds as a fertilizer?

Since seeds are packed with nutrients, could it be a good idea to break them (so they don't sprout) and use them as a fertilizer?
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1answer
22 views

Leaf scorch on perennials from fertiliser

Fertiliser was applied correctly but some of the leaves were wet and it was only watered off after signs of scorch and wilt. The leaves are scorched on some of the plants. Will the plants put on ...
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4answers
130 views

Are synthetic fertilisers necessary in potting plants?

Is it possible to have healthy plants (edible ones) flourishing in pots without the use of synthetic fertilisers? I have concerns regarding fertilisers polluting nearby water sources/soil from ...
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1answer
21 views

Is humic acid good for Norfolk Island Pine tree

I have a Norfolk Island Pine tree discussed here. I want to improve its well-being. Would liquid humic acid be helpful? What kind of fertilizer would be most effective? Is there any related ...
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0answers
18 views

How to feed and mulch fruit bushes

I found some good information on looking after fruit trees of types common in the UK here (https://www.rhs.org.uk/advice/profile?pid=539) Essentially: Clear ground of grass around the trunk Apply ...
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33 views

Fertilizers with harmful levels of salts

I read in some articles that potassium chloride and ammonium sulphate can lead to salinity buildup. Is there a simple way to tell by looking at the fertilizer formula if a fertilizer can increase salt ...
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1answer
59 views

Can you bleach human poop to use as fertilizer?

I was thinking about how in The Martian the astronaut used the crew members poop to fertilize the soil and grow potatoes and decided to learn more about that. I read, though, that unprocessed human ...
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0answers
29 views

Optimal hydroponic nutrient solutions for different herbs

I'm planning to grow different herbs hydroponically: basil, sage, mint and thyme. I would like for the nutrient solutions for each herb to be the closest possible to the optimum. For basil I found ...
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1answer
71 views

Can you “feed” an avocado plant with avocado pits?

I have grown an avocado plant using the infamous toothpick method, i.e. suspending an avocado pit in water using toothpicks. Since the avocado pit contains the necessary nutrients, I left it in water ...
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1answer
45 views

Can I use bonsai liquid fertilizer on my regular houseplants?

I have 0.5 liter bonsai liquid fertilizer that has outlived my bonsai. I have tried to give it away for free in my local Facebook plant groups, but as it seems no one is really into bonsai in my area. ...
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2answers
615 views

Is this an acceptable way to use green waste on plants?

From what I've read online, it looks like I'm not composting correctly. I don't have much space in my backyard so there's no space for a compost bin/pile. Instead, I've been putting scraps of food at ...
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2answers
374 views

Why do fertilizer ratios not add to 100?

I often see fertilizer NPK ratios that are advertised as "percentages" but the numbers do not add up to 100. My Latin is little rusty but I think per centum means per a hundred. So, in that ...
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1answer
43 views

Coffee grounds as pesticide or fertilizer (in general and/or for Chinese Evergreens)

Earlier today, I noticed a lot of small tiny flies emerging from the Chinese Evergreens I purchased last weekend. At the time, I just had my freshly ground and used morning coffee beans... so I tried ...
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1answer
46 views

Liquid fertilizers and other solutions

I am searching for organic/natural ways to feed the soil & the plants and to let beneficial microbial and fungal colonies thrive. What I am not good at is timing, and the exact recipes of ...
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0answers
20 views

Low cost, liquid acid fertilizer

I am growing strawberries which I read prefer acid soil to alkaline one. I also read that using water that were used for beans soaking is recommended as a fertilizer. Will using it make my soil more ...
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0answers
17 views

Do sweet potato tops make good fertiliser tea?

I am growing sweet potato in my back yard and I come to realize the abundant amount of potato tops after harvesting, do they make a good fertiliser tea or I would just add them to the compost?
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0answers
13 views

Why is my Miranda not coming to full pitchers and it has brown spots?

I have a Miranda Nepenthes and I've had it for about 8 months or so. It is growing like crazy but I haven't had a pitcher to get to full maturity since it came in the mail. It starts to grow pitchers ...
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2answers
88 views

Can I use these fertilizers for my hydroponics system?

I am planning to start growing using hydroponics. Unfortunately I'm unable to obtain fertilizers that are made specifically for hydroponics. However, I can get water-soluble fertilizers. The images of ...
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1answer
27 views

Can plants in soil less culture (rockwool, coir) survive on a nitrate based nutrient solution without ammonium?

I have studied nutrient composition of fertilizers. Most soil fertilizers contain an about equal amount of nitrate and ammonium as a source of nitrogen, while most soil less fertilizers contain more ...
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0answers
50 views

Single large brown spot on Dracaena Dorado

I have been giving my dracaena dorado some fertilizer this year, on and off, maybe twice a month or less since March. I let it dry out between watering. The leaf tips were turning brown so I moved it ...
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1answer
32 views

Front yard shrubs need a boost

I come over from New Zealand once a year and get the family garden sorted. This year I haven't been able to arrive any earlier because of Covid-19. So we are in the middle of summer and the garden ...
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0answers
22 views

The leaves on my peace lily are turning brown and yellow, the tips as well as the edges?

I got a peace lily plant from ikea a 5 months ago and ever since then the tips of the leaves are turning brown, or some of the leaves will turn yellow and then go brown form the outside in. I water it ...
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1answer
31 views

Blood fish and bonemeal

Because of its composition, this fertiliser is attractive to rodents. I find that a topical application often results in the soil in pots being tossed about - as they search for the meat/carcase which ...
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1answer
75 views

Use of hydrated lime as a calcium source

We have blossom end rot problem which is apparently a calcium deficiency. We have some builder's lime which I am told is calcium hydroxide and would like to use that as the calcium source. We can't ...
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3answers
117 views

Is algae good as a fertilizer for plants

I recently went to a beach and saw large masses of green and red algae, wondering if I could use this marine algae as a source of nutrition for my plants. If this is effective and not risky, should I ...
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0answers
45 views

What is going on with my coffee plant?

I have a coffee plant; I don't know the exact variation but I think it's "arabica". I got it as a small plant in a foam coffee cup 10+ years ago. It's currently located on a wall facing an East window....
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0answers
85 views

Banana tree health declining after repotting, yellowing leaves

I recently received a banana tree as a gift and as it is starting to decline I am worried about it. First off, I live in southern Canada (London) so I don't have a tropical climate but its been quite ...
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1answer
28 views

How to fertilize strawberries in containers?

I have strawberries in containers and i want to fertilize them. What is the best approch and what type of fetilizer do I need?
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20 views

What are these white granules at the leaf-ends of my gold fruit palm?

I have had a gold fruit palm in my apartment for over a year now, and it has always been happy and healthy. Recently I have begun fertilising it once a week or so with a (German) liquid palm ...
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3answers
53 views

How to convert garden fertilizer dosage to container dosage?

I have a bunch of old-school mineral fertilizers that I would like to use for container plants. The problem is that the dosage on them is grams/m2, lets say for simplicity it is 100 grams/m2. How do i ...
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0answers
16 views

What should I do if my pepper plants got too strong of fertilizer and they are wilting?

Basically, I added too much fertilizer to my pepper plants unknowingly. I thought it would help them, but the ends of the pepper plants are starting to turn brown and their stems are weak. Also, one ...
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5answers
3k views

Is fertilizing a zero-sum endeavor?

Maybe a better way to put this question is: Given an isolated garden bed, that had no external inputs except light, water and air. If you were to grow plants in it, compost those plants and add them ...
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4answers
212 views

Burnt dead plants as fertilizer

Just wondering if anyone has tried using burnt dead or discarded plants as fertilizer for new plants, and how much of the nutrients you can recycle if you reuse the waste from the previous harvest. My ...
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2answers
39 views

Garden Soil Mix

First time gardener her. The wife and I decided to get our thumbs green and give veggies a go. We are going to be growing in buckets and garbage cans, and a few potato sacks. I was investigating ...

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