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sashaeffer

Indoor seed germination question

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sashaeffer

New to seed germination indoors as I've previously just bought potted palms. I've discovered with a couple species that potted purchased palms that don't do well indoors....and die, do much better if grown from seed.

I'm using baggie method and heat mats and trays with pretty good luck.

My question is, when is the best time to plant them up and also to remove  from any bottom heat?  I don't want to "cook" the new seedlings. 

Are heat mats only supposed to be  used to get seed to "pop"?

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Fusca
2 hours ago, sashaeffer said:

New to seed germination indoors as I've previously just bought potted palms. I've discovered with a couple species that potted purchased palms that don't do well indoors....and die, do much better if grown from seed.

I'm using baggie method and heat mats and trays with pretty good luck.

My question is, when is the best time to plant them up and also to remove  from any bottom heat?  I don't want to "cook" the new seedlings. 

Are heat mats only supposed to be  used to get seed to "pop"?

Scott, it really depends on the species and your growing conditions.  If you have a humid greenhouse there's no harm in potting up once germination starts.  For palmate palms that are typically remote germinators I usually pot them up once the first leaf appears, but some with really deep radicles like Hyphaene and Bismarckia will push the radicle to the bottom of the baggie right away so I pot these up once I see roots at the bottom of the baggie.  Roots can burn up against a heat mat so you want to avoid that.  Some pinnate palms that are adjacent germinators like Dypsis prestoniana and Dypsis pembana will sometimes start a new leaf before any roots start so I feel it's best to wait until they get their roots going good before potting up.  I've lost several seedlings like this by potting up too soon because the soil surface dries up so quickly in my conditions and roots weren't deep enough.

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sashaeffer
2 hours ago, Fusca said:

Scott, it really depends on the species and your growing conditions.  If you have a humid greenhouse there's no harm in potting up once germination starts.  For palmate palms that are typically remote germinators I usually pot them up once the first leaf appears, but some with really deep radicles like Hyphaene and Bismarckia will push the radicle to the bottom of the baggie right away so I pot these up once I see roots at the bottom of the baggie.  Roots can burn up against a heat mat so you want to avoid that.  Some pinnate palms that are adjacent germinators like Dypsis prestoniana and Dypsis pembana will sometimes start a new leaf before any roots start so I feel it's best to wait until they get their roots going good before potting up.  I've lost several seedlings like this by potting up too soon because the soil surface dries up so quickly in my conditions and roots weren't deep enough.

Great advice, thanks!  I have been mindful of the seeds closer to heat mat and every couple of days lightly toss(for lack of better word) to change position of seeds in bag.

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Steve Mac

Mate,  you probably realize, but they won't like to be reorientated once the root or shoot starts to emerge.

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JohnAndSancho

This is gonna sound wild, but I googled germination for a specific species and someone mentioned baggies in their truck. I don't have heat mats or anything like that but even when we're having high temps in the 50s and 60s it gets stupid hot in the cab of my truck in the daytime. 

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sashaeffer
7 hours ago, JohnAndSancho said:

This is gonna sound wild, but I googled germination for a specific species and someone mentioned baggies in their truck. I don't have heat mats or anything like that but even when we're having high temps in the 50s and 60s it gets stupid hot in the cab of my truck in the daytime. 

That would certainly work!  I think seeds need that natural heat/cool cycle but I'm just assuming.

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Steve Mac

@JohnAndSancho that's not a surprise to me. I have never used a heat mat but a few years ago I put some slow to shoot baggies into my caravan outside our house, because it got hot in there. In a month I had several species sprout that were about a year old.

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NOT A TA
19 hours ago, JohnAndSancho said:

This is gonna sound wild, but I googled germination for a specific species and someone mentioned baggies in their truck. I don't have heat mats or anything like that but even when we're having high temps in the 50s and 60s it gets stupid hot in the cab of my truck in the daytime. 

May have been me who posted about using the baggie method in my truck. Since I live in a 10 B area of S FL there's little reason to buy a heat mat for the plants I grow.  However, sometimes I want to germinate things during winter so I've experimented with different things like the baggie/truck method. Another somewhat unusual place I've also germinated seed is in the attic.

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cisco

I have put the clean seeds in plastic 2 cup beer mugs. Coconut coir + perlite 50/50 mix. Beer mugs I put in a ziplock bag and seal it. The humidity is high inside. I keep them warm place. When I see something green it's time to open bags. I don’t need to touch sensitive roots. It’s fun to look through a beer mugs at how the roots grow. 

_20170317_112925.jpg

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sashaeffer
On 3/7/2021 at 9:40 PM, cisco said:

I have put the clean seeds in plastic 2 cup beer mugs. Coconut coir + perlite 50/50 mix. Beer mugs I put in a ziplock bag and seal it. The humidity is high inside. I keep them warm place. When I see something green it's time to open bags. I don’t need to touch sensitive roots. It’s fun to look through a beer mugs at how the roots grow. 

_20170317_112925.jpg

Great idea!    Anything that helps eliminate the transition from loose germinated seeds in a baggie to a grow cup/pot.

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