Concerned Seedlings

FoxMulder · March 10, 2016

Seedlings are almost 3 weeks old. I'm concerned about the leaves twisting upward, as well as the purple color on the underside of the leaves.

I have not added any fertilizer or nutrients. I water every 3 days. I keep the grow light on about 12 hrs/day. Temperature is around 68 F.

I have been searching the web for similar symptoms, however I have not been able to find anything that looks like my situation. Any information or suggestions would be great.

Thanks

NuttyPistons · March 11, 2016

While I am by no means an expert, I'd say your plants look just fine. The purple underside is perfectly normal. I wouldn't be too concerned with the leaves curling upward, perhaps your lights could be closer. I usually try to get the bulbs within about an inch of the leaves. What kind of medium are you using? Straight peat?

Ricky Shaw · March 11, 2016

You don't need any nutrients, they don't have true leaves yet. Did they take a long time to sprout? I'd want more at 3 weeks. You say they got light, 68 for an avg temp is a lot colder than I keep'em. I keep temps in the high 70's for toms and peppers sprouts till I have good leaf formation.

Maybe others will add.

AlittleSalt · March 11, 2016

I agree with Ricky_Shaw. I start seeds on two shelves in our house. One shelf is at 4' tall and other is at 5' tall. The taller shelf always germinates faster. It's warmer at 5' than at 4'.

75-85F works well for me.

Ricky Shaw · March 11, 2016

It's solid testament to whatever that medium is, it's capability to stave off damping. For the process to have taken this long, in those temps, to not have some damping is remarkable to me.

edit to add: I think they're savable, totally. I'd leave the lights on 24/7 for the time being, and get the temps up.

AKmark · March 11, 2016

I think you may have phosphorus deficiency.
http://www.haifa-group.com/knowledge...tables/tomato/

MissS · March 11, 2016

Quote:

Originally Posted by AKmark

I think you may have phosphorus deficiency.
http://www.haifa-group.com/knowledge...tables/tomato/

I agree with Mark and I would increase the temps until you get some true leaves. I also wonder what variety they are. Some of the antho types do have rather purple stems and underside at the seedling stages.

heirloomtomaguy · March 11, 2016

They are fine. Once you transplant them into nutrient rich soil they will be just fine. Since you started them in peat plugs you can pot them up right now if you want. Thats what i start seed in and they work great

KarenO · March 11, 2016

they are OK, just chilly.
KarenO

ginger2778 · March 12, 2016

I agree with those who say they are cold, cold seedlings get purpleish leaves which they grow out of. I would think phosphorous deficiency if they were more advanced, but at this stage the cotyledons have all the food they need until they grow a first true leaf and the start of the second ones. They are curling up also due to the temperature.
If you put them closer to your grow light that might give them light and a bit more heat too.
Do you have a seedling heat mat?
They will be perfect once transplanted, nothing too awful going on there.

FoxMulder · March 12, 2016

Quote:

Originally Posted by NuttyPistons

While I am by no means an expert, I'd say your plants look just fine. The purple underside is perfectly normal. I wouldn't be too concerned with the leaves curling upward, perhaps your lights could be closer. I usually try to get the bulbs within about an inch of the leaves. What kind of medium are you using? Straight peat?

I'm using General Hydroponics Rapid Rooter plugs. I've never used them before. I've noticed these plugs retain a lot of moisture.

Thanks

FoxMulder · March 12, 2016

Quote:

Originally Posted by Ricky Shaw

You don't need any nutrients, they don't have true leaves yet. Did they take a long time to sprout? I'd want more at 3 weeks. You say they got light, 68 for an avg temp is a lot colder than I keep'em. I keep temps in the high 70's for toms and peppers sprouts till I have good leaf formation.

Maybe others will add.

It took 7 days for most of the seeds to sprout. A few of the seeds to 10 days.

Thanks

FoxMulder · March 12, 2016

Quote:

Originally Posted by MissS

I agree with Mark and I would increase the temps until you get some true leaves. I also wonder what variety they are. Some of the antho types do have rather purple stems and underside at the seedling stages.

These seeds are from Seed Savers Exchange and they are called Gold Medal or as they were originally introduced, Ruby Gold.

Thanks

FoxMulder · March 12, 2016

Quote:

Originally Posted by ginger2778

I agree with those who say they are cold, cold seedlings get purpleish leaves which they grow out of. I would think phosphorous deficiency if they were more advanced, but at this stage the cotyledons have all the food they need until they grow a first true leaf and the start of the second ones. They are curling up also due to the temperature.
If you put them closer to your grow light that might give them light and a bit more heat too.
Do you have a seedling heat mat?
They will be perfect once transplanted, nothing too awful going on there.

I don't have a heat mat. I have considered buying one, though.

Thanks

FoxMulder · March 12, 2016

I'll see what I can do about raising the temperature.

Thanks everyone for your comments and support.

March 11, 2016	#5
Ricky Shaw Tomatovillian™ Join Date: Aug 2015 Location: Zone 6a Denver North Metro Posts: 1,910	It's solid testament to whatever that medium is, it's capability to stave off damping. For the process to have taken this long, in those temps, to not have some damping is remarkable to me. edit to add: I think they're savable, totally. I'd leave the lights on 24/7 for the time being, and get the temps up. Last edited by Ricky Shaw; March 11, 2016 at 11:17 PM. Reason: actionable advice

March 11, 2016	#8
heirloomtomaguy Tomatovillian™ Join Date: May 2013 Location: glendora ca Posts: 2,560	They are fine. Once you transplant them into nutrient rich soil they will be just fine. Since you started them in peat plugs you can pot them up right now if you want. Thats what i start seed in and they work great __________________ “Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it. Because narrow is the gate and difficult is the way which leads to life, and there are few who find it."

March 11, 2016	#2
NuttyPistons Tomatovillian™ Join Date: Feb 2016 Location: Central NY Posts: 26	While I am by no means an expert, I'd say your plants look just fine. The purple underside is perfectly normal. I wouldn't be too concerned with the leaves curling upward, perhaps your lights could be closer. I usually try to get the bulbs within about an inch of the leaves. What kind of medium are you using? Straight peat?

March 11, 2016	#4
AlittleSalt BANNED FOR LIFE Join Date: May 2014 Posts: 13,333	I agree with Ricky_Shaw. I start seeds on two shelves in our house. One shelf is at 4' tall and other is at 5' tall. The taller shelf always germinates faster. It's warmer at 5' than at 4'. 75-85F works well for me.

March 11, 2016	#6
AKmark Tomatovillian™ Join Date: Jun 2013 Location: Wasilla Alaska Posts: 2,010	I think you may have phosphorus deficiency. http://www.haifa-group.com/knowledge...tables/tomato/

March 11, 2016	#9
KarenO Tomatovillian™ Join Date: Oct 2012 Location: Vancouver Island Posts: 5,932	they are OK, just chilly. KarenO

March 12, 2016	#10
ginger2778 Tomatovillian™ Join Date: Aug 2011 Location: Plantation, Florida zone 10 Posts: 9,283	I agree with those who say they are cold, cold seedlings get purpleish leaves which they grow out of. I would think phosphorous deficiency if they were more advanced, but at this stage the cotyledons have all the food they need until they grow a first true leaf and the start of the second ones. They are curling up also due to the temperature. If you put them closer to your grow light that might give them light and a bit more heat too. Do you have a seedling heat mat? They will be perfect once transplanted, nothing too awful going on there.

March 12, 2016	#15
FoxMulder Tomatovillian™ Join Date: Mar 2016 Location: Chicago Posts: 8	I'll see what I can do about raising the temperature. Thanks everyone for your comments and support.