First Time with Jiffy Pellets

[NarnianGarden]

Hi all: This year, I am attempting to use jiffy pellets (peat) and did manage the watering project. Still, no sight of any life, although the first seeds were sown a week ago. No, they haven't dried out... but I have read some criticism over the years about the various challenges these pellets may present, so I am asking all of you experts if there is anything you could tell me I need to pay attention to.

Is it normal for seeds to take longer before they germinate when sown in jiffy pellets? Something in the materials or the method which may delay growth?

[mikemansker]

I've used them successfully in the past. The germination didn't seem any slower than normal. I do think you have to pay more attention to how deep you are planting them in the pellets.



If they are in a covered tray under lights and on a heat mat, it should be pretty much like germinating in potting mix.

[NarnianGarden]

No heated mat, they're in normal room temperature under the plastic dome. That is how I always started my seeds before. I guess the material is a bit trickier and it is not easy to push the seeds into it.. Should another week go by without results, I will re-sow (yep, that is a sure way to get all seeds pop up at once...), and maybe even sow some varieties into potting mix for back-up.

[slugworth]

instead of water I make them expand with a liquid fertilizer.
For me they take longer also,my theory is they are cooler than a
normal cell with soil due to the evaporation from the pellet during the day.

[ChiliPeppa]

I've used Jiffy pellets for years with no problems. I used coir pellets this year for the first time. They're even better than the Jiffy pellets and cheaper too.

[Foose4string]

Not sure what advice I can lend except don’t use them. Not a fan.

[peebee]

Do they still come covered in that awful netting material? Used them years ago but stopped cuz that netting was still wrapped around the roots at the end of the season. They did not decompose.

[AlittleSalt]

Originally Posted by Foose4string

Not sure what advice I can lend except don’t use them. Not a fan.

Originally Posted by peebee

Do they still come covered in that awful netting material? Used them years ago but stopped cuz that netting was still wrapped around the roots at the end of the season. They did not decompose.

I agree with both of you. I had some left and tossed them into the burning pile years ago.

[taboule]

Originally Posted by peebee

Do they still come covered in that awful netting material? Used them years ago but stopped cuz that netting was still wrapped around the roots at the end of the season. They did not decompose.

Best practice is to remove that netting when planting out. Even if they did decompose, it wouldn't be fast enough during one season. Same with those "cardboard" peat pots, always best to peel them off.

I've used them extensively over the years -and still do. There are (at least) 2 types of netting. The best is a very thin mesh, honeycomb-like, with a set or vertical perforations on the side, making it super easy to unzip the case and discard the netting. This is typically on the VERY large pucks by Jiffy.

Then there is a type of random, tight weave mesh made from either kevlar (i'm not making this up ) or a tougher material that's nearly impossible to tear by hand -you'd need scissors or better. I make sure I stay away from those.

Note that Jiffy pucks are made of peat, and many folks report trouble germinating peppers in them due to their chemistry. I'm beginning to conclude the same, as I've never had much luck with that combination. For many other situations, pucks can be handy.

[simmran1]

I've always had great germination, growth etc. with 36mm pellets. But the very thin mesh that is easily torn off is a thing of the past, as currently (2021) the Jiffy pellets are surrounded by a weave that must be cut off with scissors. I've only found 1 windowsill tray that was the old style this year..

[NarnianGarden]

Foose & AlittleSalt, that sure doesn't sound encouraging

But hooray! The first one has come alive! Not all hope is lost. Am well aware about the netting problem and will remove all of that before re-potting the seedlings.
It's an experiment I took upon me in order to avoid buying heavy bags of soil... which I'll eventually do for the latter stage. So many people seem to happily use them, so they cannot be all bad (except the enviromental issue of course which is removable)

[AlittleSalt]

Originally Posted by NarnianGarden

Foose & AlittleSalt, that sure doesn't sound encouraging

But hooray! The first one has come alive! Not all hope is lost. Am well aware about the netting problem and will remove all of that before re-potting the seedlings.
It's an experiment I took upon me in order to avoid buying heavy bags of soil... which I'll eventually do for the latter stage. So many people seem to happily use them, so they cannot be all bad (except the enviromental issue of course which is removable)

Well, being blunt sums-up my experience with them. I found a way that I like with the seed cells, I believe it mimics nature more. In the same thought - I hope the Jiffy Pellets work out great for you.

My wife was telling me about something on her Facebook thing that actually sort of makes sense. People are starting seeds in ice cream cones...I guess it would work?

[oldman]

Jiffy pellets aren't my favorite seed starting option. You can grow things in them but they aren't that stable when your seedlings get some growth and you need to transplant sooner than you do with seeds grown in flats.

You didn't say what you had planted or how fresh the seed was, but if you Google germination time it's easy to find tables that tell Yo 7-10 days at 75 F or something similar. Older see dwill take longer and it all reaches the point where germination rates are low to no germination at some point.

Jiffy plugs shouldn't alter germination times but how moist they're kept, temperature, and if they're covered to retain humidity can all effect germination times. If you only start a few plants a year there might be a role for them in your garden. If you start enough seed that you have considered heat mats and or grow lights you'll probably just want to order some trays ans inserts from a greenhouse supply store and use a good seed starting mix.

[brownrexx]

I don't like them either but this year I bought a few of them so that I can start some cucumber and zucchini about 2 weeks earlier than I would plant them in the ground. I did not want to transplant them so I bought some peat pellets. I will cut off the netting before planting.

[NarnianGarden]

Oldman: I hadn't mentioned it but they are all tomatoes (I had thought it to be obvious) :-)
And, as mentioned, I have sowed tomato seeds many times before, of various ages, and usually there is life within a week (often within a few days) so it is not for lack of experience.

Heat mats or extra lighting aren't an option, and I have not needed any of them befoe (nor do I have space for them) as I try to keep things very simple. That usually works well and seeds like to come alive.
Glad to know that I need to re-pot the seedlinga sooner than usually.. will keep it in mind and get some used and washed cartons for them.
We'll see how it goes..