I have a treatment for my plants that the instructions call for so much per gallon pot. Example: Add 1oz. per 1gallon pot.How do i figure how much to add to pots if i only can identify the size in inches? I hope that's clear enough to understand what i'm asking.

What size pot in inches equals a gallon pot?

THANK YOU SO MUCH FOR ANY HELP I CAN GET!!!!!

I found this. Hope it's of some help!
http://www.hardytropicals.org/...

A "commercial" gallon pot measures approximately 7" in diameter at the top and is approximately 9" high. A "true" gallon pot measures approximately 8" across the top and is approximately 9" high. The bottom will be about 1" less in diameter on each.

Jojoe,

if you have some spare, empty pots of the same size, plug the holes with duct tape.

Fill the pot from a quart or half-gallon jug and see how much water it takes to fill it. I don't think the weight of water will split most pots.

Thanks for the advice,

Woofie, I am going to bookmark that link until i can print it out.That helps more than anything i have been able to find.

Glad it was of some help!

May i have opinions on how i am trying to figure this out.

The chart says 1 gallon pot = 7-8 inch pot

If i put enough to treat a 1 gallon pot in some water, use half to water a 4 inch pot & the other half to water another 4 inch pot that should work? Anybody agree or disagree??

That link says a 4" pot is around one pint. So two 4" pots would be one quart, not one gallon.

Probably enough to treat a one-gallon pot would treat EIGHT 4" pots, guessing based on that link.

>> Example: Add 1oz. per 1gallon pot.

Therefor add 1/8 ounce per 4" pot.

1/8 fluid ounce = 3/4 teaspoon
1/8 ounce weight = 3.5 grams

For TWO 4" pots, combined, try 1 1/2 teaspoons or 7 grams.

It des not matter how much of the gallon you apply to each pot. The important thing is getting the ratio right. If the dilution calls for 1 tsps./gal, the dilution will be the same whether you drench a 4" potted plant with the entire gallon or treat 10, 4" pots with that gallon. Your soil/plants are getting exactly the same dilution.

Both Rick and Ken are correct. The only question is whether the treatment keeps well after being mixed up. And of course whether you want left-overs hanging around.

@jojoe
I don't suppose you would share with us the entire directions as printed on the package? And the name of the product you are applying? It may be a product with which we have experience.

One easy way to do that is take a digital photo of the label and upload the photo.

I just went by what I read, not really understanding what I read.

>> the instructions call for so much per gallon pot.

I agree with Ken if the instructions were the usual "add one ounce to a gallon of water and then water heavily or lightly with this STRENGTH, or this DILUTION."

But if the label meant something like "add one ounce of pixie dust per gallon pot" , then the 3/4 tsp idea might be relevant.

Mostly I agree with Greene: what is the mystery product and what are the complete instructions? Are they saying to make a safe dilution in a gallon watering can, or to put X amount of stuff into each pot?

And is it to be laid on top of the soil, or mixed with soil before potting up?

This product is a bayer advanced protect & feed.I got it last year to treat my plants that spend so much time outside before i bring them in.I only use it on plants that don't flower or have any kind of berry or fruit because it is a systemic insecticide.I know a lot of people don't like systemic insecticides and there's a lot of controversy over it but as with anything i believe used correctly and with some common sense the negative things about using it can be avoided.I live in the country & have problems with bugs that can really do a lot of damage to my plants.Last year i used it and i used it wrong,i pour the amount of product it says to use into a gallon of water.Then i realized after reading the label again that's not what it means.I have the label in front of me.
This is what it says.

"HOW MUCH TO APPLY TO CONTAINERIZED PLANTS:
container size Amount of Product Needed
1 gallon 1 teaspoon
2 gallon 2 teaspoons
3 gallon 1 tablespoon
Etc......

Pour the required product into sufficient water to wet the potting soil thoroughly.To help assure that roots absorb the insecticide,do not water to heavily for the first 10 days."

I hope this clears up the what i've been trying to say and doing such a poor job of. I just want to convert gallon pots into pots sized by the inch.
Here's the conversion chart,so by this every 8" pot would require a teaspoon of product.
4"pot= pint (0.5 guarts)
5-6" pot = quart (0.25 gallon)
7-8" pot= 1 gallon
8.5" pot = 2 gallon
10" pot = 3 gallon
12" pot = 5 gallon
14" pot= 7 gallon
16" pot= 10 gallon
18" pot = 15 gallon
24" pot = 25 gallon
30" pot= 30 gal

Maybe i will try it on a couple of extra plants i have,I'm having a hard time with some jade plants and a Diffenbachia i think it's some kind of root mealies or something like that but nothing else has helped.If i kill it it oh well something else is killing it now.

Does this help?? It does work because i have large plants we use it on that when we bought them they were labeled by the gallon.If you look at lowes some plants are labeled in gallon sizes.Those were easy to treat.The smaller pots have become quit a challenge.

Stating the label directions is a help. It is a simple 1 tsp./gal. dilution. It still does not matter how much you "water" the soil with this dilution. The directions just say to wet the soil thoroughly with the solution. If you have a lot of potted plants, and have a large enough container, say a five gallon one, you would add 5 tsp. to that 5 gal. container and apply whatever amount you wanted to each pot.

I'm not sure that's correct, Ken. It sounds to me like the direction are saying to put one tsp of product into an unspecified amount of water ("sufficient water to wet the potting soil thoroughly") for a gallon sized pot. Odd directions, I must say.

I agree - odd. Probably a product from China, with translation problems!

I agree with Woofie, I think you want to get 1/8 teaspoon into each 4" pot.

((Edited to correct earlier mistake - thank you, Woofie!))

>> ("sufficient water to wet the potting soil thoroughly")

I guessed that they want to expose all of the soil but not waste mush dripping out the bottom. (Like a "drench" but not wasteful.) But it is a systemic insecticide, so that shouldn't be crucial.

Um, wouldn't that be 1/8 tsp for a 4" pot? If a 4" pot = 1 pint?

This high math is giving me a headache!

Oooops! I was using the first example: add 1oz. per 1gallon pot.

But since the real deal is "1 tsp per gallon pot"
then it should be "1/8 TEASPOON per 4 inch pot".

As Woofie said.


Edited to add micro-measuring spoon links .

I use these tiny spoons to divide seeds for traing. Hopefully you need to water 2 or 4 4" pots, so you can measure once and done, using a normal measuring spoon!

These five Norpro oval shapes are easier to sneak into a spice jar if it has a small "spoon" opening". But they have funny names like "drop", "pinch", etc.

And different customers have different opinions about how much each one holds!
And I found that some of the "oval" and "square" DASH spoons do hold different amounts.

https://www.amazon.com/dp/B0009X1P9S/

Norpro customer comments:
tad is 1/4 tsp (or one guy claims 1/55th)
dash is 1/8th teaspoon or 1/12th
pinch is 1/16th
smidgen is 1/32nd
drop is 1/64th

Damesco sells a squarish-scoop, but they seem now to sell only 3 spoons, not 4. And since they claim these exact sizes, they might be right:

dash (1/8 tsp),
pinch (1/16 tsp),
smidgen (1/32 tsp)

https://www.amazon.com/dp/B0000VLN1E/

Amco sells a more expensive 4-spoon set but I haven't tried them:

https://www.amazon.com/dp/B000MOYI5W/