HUGE Seedling Update - Potting Up Dahias And Tomatillos! 🌱 || Seedling Care

My dream garden
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Aug 24, 2026
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Video Summary
AI GeneratedLori from Main Street Gardener shares her spring seedling processing in zone 7B. She demonstrates techniques for transplanting lettuce, pinching snapdragons to prevent legginess, and the benefits of pre-sprouting dahlia tubers and seeds indoors to ensure earlier blooms and stronger plants.
Everybody, it's Lori with Main Street Gardener,
and I'm a zone 7B garden.
And today I am just spending some time
processing and working with all of my seedlings.
So these lettuce seedlings,
they look a little lime green here,
but they are really pretty shade of green.
This is a mix of some lettuce heads, some romaine,
and I just wanted to go ahead and get them out
in my new raised bed
and hope that they will grow a little bit faster there.
Now, the next thing I'm working on today,
these are snapdragon seeds,
and I have several trays of them.
Now, it's a good idea once your snapdragons
have at least two sets of leaves, so double leaves.
So you'll have two at the bottom,
and then there's a second set.
Once they grow past that,
you want to start trimming them back.
That's when you know that you need to do that.
It will prevent, you can see here where I'm cutting back,
that's that third set of new leaves.
It prevents this leggy, weak-stemmed plant.
So especially with snapdragons,
you want your snapdragons to grow really tall and strong
and to have lots of blooms.
So I learned this the hard way.
The first few years that I grew snapdragons,
I did not pinch them back,
but you can see here how they're bending over.
And so you do want to take the time
to go in and pinch them.
So just make sure you've got two sets of leaves,
and then you can cut them back.
I know it seems so harsh, but you will be glad you did it.
So that was project number two today.
And then project number three
is actually going to be working on all of my dahlias.
So I wanted to show you how I'm going to work
with my dahlia tubers that I've been kind of pre-starting.
I'm also going to work on my dahlia seedlings.
So I thought it would bring up my seedlings
as well as my dahlia tubers that I've started
and work out here in the sunshine today.
And I thought it might help you to see
the difference in seedlings versus tubers
and the success that I've had.
So right here, you'll see I have three trays
of dahlia seedlings at different stages,
as well as some tubers that I pre-sprouted.
So I like to take a large tray, just fill it with some soil.
You can use seed starting mix or potting soil.
It really doesn't matter.
And then I just set the tubers in the soil
and put them in a warm spot.
So for me, I actually put these under some grow lights
and they have now started developing their green foliage.
So as soon as you see some sprouts like this one,
you know you have a viable tuber.
Now this is a tuber that I could probably even cut apart,
but I didn't see any other eyes.
So I'm just gonna keep the one,
I'm gonna keep the entire tuber intact.
So because I'm in a zone 7B,
I have found that my best results for my dahlias
and to get blooms from really mid-June through September
is I like to, once they've pre-sprouted,
I put those and plant them up into containers.
Then I keep them under grow lights
or in a really warm, sunny window.
I keep them there until around Mother's Day
when I can then plant them out in the garden.
They will start growing
and I will already have a couple sets of leaves
when I put them outdoors.
So there's the one that has the little sprout.
I'm just gonna sit it down in some dirt
as if I was planting it in the garden.
Now, most of the time,
you wanna put your tubers on the side,
but this one, the little start is growing straight up.
So I'm gonna put it in just like this.
Now, I'm just adding some dirt all around it
and I leave the little bit of the stem sticking out
and a little bit of that green tip.
That's just the way I do it.
And then I will water this just a little bit.
I'll probably only water it weekly
and it's going to go back into the sunshine.
Now, I'm evaluating the other tubers
that I had in my container.
And unfortunately, this one has not sprouted
and I don't see any eyes that are popping out.
I'm gonna go ahead and put it back in the soil
and give it a few more weeks.
Some tubers are really slow.
Now, this one, I can see a little eye that has popped out.
It doesn't have any greenery yet, but that's okay.
We have a viable tuber
because we have a eye that is prominent
and it's about to kind of burst forth
with that green foliage.
So I'm gonna go ahead and pot this one up as well.
Now, the reason I like to pot my dahlias
and let them grow indoors is because in zone 7B,
we get a lot of rain
and our soil really doesn't warm up until around mid-May.
I have found that if I put my dahlias in the ground,
cold turkey, so no pre-sprouting in mid-May,
I don't have blooms until almost August.
So I miss almost two months of my dahlias growing strong
and beautiful and having all those great blooms.
So I have found it really works great
if you have this space to pre-sprout.
Now, here's another tuber that is still asleep.
There is absolutely nothing wrong with that tuber.
I'm just gonna give it a little bit longer.
So today I put four pre-sprouted tubers into containers.
This is an option that you can do.
You don't have to, but I thought I'd share it with you.
Now, my next big project is my dahlias seedlings.
So last summer I let some of my flowers go to seed.
So I let them just stay on the plant
until they got nice and crispy and had tons of seeds.
I collected bags and bags of dahlias seeds.
So what I did is I pre-sprouted in these trays.
I just put in a couple inches of dirt
and I sprinkled the seedlings in.
I had no idea how these would do
and if they would actually germinate.
Well, as you can see, I was very successful.
I am so excited at the amount of seeds I was able to get.
And now I have no idea what these will look like
because they were open pollinated,
which means they were just growing in my garden
and the bumblebees or flies
were pollinating from flower to flower.
So these are gonna be just a beautiful mix
and I'm really excited to see how they turn out.
So all I'm doing now is I'm actually sizing these up.
So since I had so much success,
I am going to pot these into some containers.
Now I'm gonna have way more dahlias than I can use,
but there's no way I could throw my sweet babies out.
So I'm gonna go ahead and pot up as many as I can.
The larger ones, I'm gonna plant as single dahlias
and I'll probably, for some of the small ones,
put two in each four inch container.
Now these will go back under grow lights
and they're gonna continue to grow
and they will double or even triple in size
before it's time to go out in the ground.
My plan for these is to share them
with some gardening friends.
I'm a member of a gardening club
and I may even try to sell some
in our local community Facebook group
or just share them with neighbors
that wanna try their hand at growing some dahlias.
I still have tons of seeds actually in my growing space
that I wasn't even able to use this year.
So if you have interest in collecting seeds
from your dahlias, it is such an easy process.
You could even just save maybe two to four blooms
and you are going to get tons of seeds.
I would say that each bloom I saved
probably had 25 or more seeds
and they are large seeds
which makes it really easy to save.
So you can see here I'm putting two
in some of these containers because they're tiny
and they're just going to continue to grow.
Now I often get questions about do I get tubers?
So yes, these little seeds,
once you plant them in the ground,
they will grow tubers during the growing season.
They are gonna be small tubers
and I actually did save a few of mine from last year
and I have them now that are already potted up
and I will be putting those in the ground.
So it's a really fun process.
Now you can get dahlia seeds from online vendors.
You can even find them at the dollar store.
Dahlia seeds are just a great option.
Now you're not going to get large dinner plate style dahlias.
Those are actually bread and the tubers help form those
but these are gonna be almost like a mix
of a Cosmo and a Xenia.
They're sturdier than a Cosmo
and the blooms are a little larger.
The bumblebees love them
and I think they're really magical
and beautiful in the garden.
So it might be something fun that you wanna try next year.
So I was excited to get all of these seedlings potted up.
Now I still had a ton left
and so I just took a large tray
and spread out the baby seedlings to let them grow.
I think I'm gonna get some six packs
and put some of those starts in there
so that I can give them away
to some friends again and neighbors.
So a very fun project
but I definitely got more than I had expected
and there's just not any way I could throw these seeds out.
They are gorgeous.
I'm already thinking of where I can put them in my garden
and who all I can share them with.
All right, so there's my table
full of Dahlia seedlings and Dahlia tubers.
Those are gonna all go back under grow lights
and in a warm space.
Again, I'll start hardening them off the 1st of May
and I will definitely give you an update.
So next, I wanted to move on to my last project of the day
which is going to be repotting some Tomatillo plants.
So the Tomatillo plants was an experiment as well
that I did this year.
Aren't these Dahlia seeds beautiful?
They are really, really pretty
and such a fun project
that I hope you'll consider doing if you grow Dahlias.
So next up, I was at a garden center in California
and saw seeds for Tomatillos.
If you're not familiar with those,
they're used a lot in Mexican, authentic Mexican cooking.
They are a type of green tomato
but they're very flavorful.
They work great to make salsa with.
You can do an avocado Tomatillo crema salsa.
You can put them in dishes and they're just amazing
but they have a very long growth cycle.
I think it's over 180 days
and in zone 7B, it can often be hard to get fruit.
So I went ahead and started
these incredible tomato type plants in January
and you can see they have done tremendous.
They have loved growing in my basement grow space area
under the grow lights.
I even have some blooms and some early fruit.
I am not gonna pick that off.
I'm gonna go ahead and see what happens
if I let the blooms continue.
So what I'm gonna do today
is actually transplant these out of their four inch pots.
A couple of reasons for that.
I think the roots are a little bit,
they're getting a little crowded.
Second, I wanna bury them a little bit deeper.
Now I didn't have any really large containers
but this container here, it's like a long narrow one,
is a little bit deeper
and I'm gonna put the soil all the way to the top.
You want to treat these just like you would a tomato plant.
So the little kind of feathery quality to a tomato plant
is where it will make roots.
So look at these gorgeous roots on this tomatillo.
I just can't believe it.
Now the tops of the stem above the root base
actually will make more roots.
It's gonna help have a sturdier plant
and a plant that can produce more fruit.
So you can see I'm actually burying this
and I'm gonna continue to add soil
all the way up to the rim of the container.
This will allow this tomatillo plant to get stronger
and really be able to stand some height
and make lots of fruit.
So I'm just gonna transplant the ones,
the seedlings that I have.
I think I have six or seven
and I'm gonna put them as many containers as I can find.
Now they are actually gonna go in my cold frame
and stay there to grow on in the bright sunshine
and in the warmth of the cold frame.
If we get a cold snap below freezing,
I will bring them indoors,
but I'm hoping that throughout April
they can manage outside
and then I can put them in the garden the 1st of May.
So if you grow tomato plants indoors
and you start them really early, this could be an option,
but you would need to size them up.
I think that's the thing to consider with growing seeds.
If you start early, you'll probably need to size up,
which is what I did today with the dahlias
and the tomatillos.
If you start a little later,
you typically can go straight out into the garden.
It's just a preference, but for these, it's a test
and I wanted to see if I could grow them
and if I can get fruit.
So I will keep you updated on my tomatillo journey,
but I'm gonna let you see how I finished potting these up
and I just wanna thank you for watching
and let me know what you're growing,
what you're working on in your garden right now.
I can't wait to get all these plants planted out
in my veggie space and out in the garden
in just a few weeks.
We're almost there.
