Questions tagged [seedlings]

Small juvenile plants which have just germinated.

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30 views

Why are my Acer seedlings drying up and dying?

I’ve grown lots of little Acer seedlings from seed I picked last autumn and germinated early this year after 100 days in the fridge. I was very excited about the success of the seeds but now at a good ...
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42 views

How hot can soil get if daily temperatures persist above 100°F?

I am doing some research on ponderosa pines and climate change. I am currently trying to find (with no luck) how hot soil can get if subjected to direct daily sunlight with temperatures exceeding 100°...
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503 views

New leaves from mango seedling are drying up and dying off but the plant is still growing

I started some mango plants from seed and after a few weeks they're slowly growing. However, now that each plant has a new leaf or two, I've noticed that some of the newer leaves are drying up and ...
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444 views

Growing Goji Berry from dried seeds

I am wanting to grow some Goji Berry bushes. A few months ago I soaked some (regular dried store bought) Goji fruit, then cut them open, used the baggie method to germinate the individual seeds and ...
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29 views

Sterilising seed starting trays with rubbing alcohol

Is wiping with rubbing alcohol enough to sterilise seed starting trays or is bleach or hydrogen peroxide necessary?
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16 views

Cactus(Astrophytum) seedlings weather requirements

I live in Kerala, India, where the weather is humid dry. The temperature ranges from around 26 at night to 33 on daytime. My Astrohpytum seedlings are growing. They're 1.5 months old now. My questions ...
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834 views

Mango seedling has stem and leaves but no root!

I've got two problems with my mango seedlings: Problem #1 I have germinated a mango seed in water, it now has a decent stem and healthy-looking leaves. It is currently still in water, indoors, in ...
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45 views

How to prune a Zelkova seedling turning into a multi-trunk tree?

In October '18, I started growing several Zelkova trees from seed. One of them, pictured below, is doing remarkably well. However I'm concerned about it's branching structure. Almost immediately ...
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48 views

Distance and spacing of LED growlights for propagation

I am planning to make an indoor propagation setup which consists of h:30cm x w:40 x L:50cm recycled polystyrene boxes and full spectrum LED panels. Clearly, the biggest limitation is height in this ...
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37 views

Lettuce - DLI recommendation day 1-14 with full spectrum led

Im looking for a recommendation of the DLI for lettuce in a hydro setup for the first 14 days using a full spectrum led i would figure it at 8 -12 mol/m2/day what do you think? greets
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28 views

Very thin stem of Brussels sprouts at the soil line

I started some Brussels sprouts from seed, and on several of them I notice that the stem is very thin at the soil line. These ones are tending to lie instead of standing erect. Is this something to be ...
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1answer
38 views

Two Growths from One Tomato Seed

I have planted tomato seeds and as far I remember I didn't put more than one seed in a planting hole of each seedling container. I was using tweezer to drop each seed into a hole. However, I am ...
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24 views

Seedling tray flies (fungus gnats)

My seedlings trays (special the cultures that need quite some water) are infested with small flies (and larvae). I grow my seedling trays indoor. Are they harmful for my cultures? How can I get rid of ...
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25 views

Something is eating my young (indoor) vegetable seedings down to the stem

The leaves on my young kale, broccoli and chilli seedlings keep getting eaten overnight. I started noticing it gradually but now I will wake up to a whole tray of seedlings eaten back to the stem. ...
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14 views

Do my Forget-me-nots need more sunlight?

I planted them two weeks ago, a week later they germinated. Although two days ago I noticed that one was drooping and that they were a dull green. I'm not sure if they need more sunlight; I was ...
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13 views

How to minimize harm for leafed-out bare root trees being transplanted late in spring at a remote site?

I have a lot of bare root trees leftover from Fall 2019 seed propagation. These are seedlings which first emerged in Spring 2020 and now are entering their second year of growth. They are mostly small ...
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1answer
31 views

Yellow spots on my tomato seedlings

Would anyone happen to know what these tiny yellowish dots are on my tomato seedlings. They are about a month old, the seedlings. I've just noticed the spots after a deep watering. I've checked for ...
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1answer
251 views

Why are my Zinnia seedlings dying?

It is a seedling of Zinnia elegans Super Yoga. The cotyledons have dried out and I have no idea why. Potentially relevant information: The soil media is an equal mix of compost, river silt and coco ...
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1answer
36 views

What caused the roselle seedlings to emerge like this?

I had planted some roselle seeds in a seed tray with an old mix of cocopeat, perlite, vermiculite and compost. The seeds were soaked in water before planting for some time. Now after eight days or so ...
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18 views

Tips about trying to get tree sapling to grow after winter fallout

I sprouted this sapling from seed in my backyard, and it grew to a foot tall with 2 big leaves in 2 months. But winter came and it stunted its growth, and the top part of the stem dried up. Now it is ...
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1answer
83 views

Tomato seedlings drooping after being placed outside

I don’t know what happened to my tomato seedlings. I just left them outside the balcony and when I checked them after 1 hour, they were all drooping. I already moved them inside my room. Please help ...
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33 views

Help identify this unknown seedling please

I'm not familiar with this plant and want to know so i can decide if it lives or not (mostly based on safety of my dogs) i was thinking hibiscus but someone else suggested a type of mulberry, it gets ...
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29 views

Beetroot doesn't grow

I tried to grow beets in Central Europe, where it is a common plant. It's the third year that my little seedlings, which germinate very nicely, stop growing. Their leaves turn red, then turn yellow ...
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21 views

Poppy seedlings - dried out or saveable?

I'm growing some poppies for the first time and they were doing okay until we had a snow storm. Then I noticed they were wilted/dried out. I did some research into the waterbottle greenhouse and they ...
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1answer
89 views

Golden Rain Tree Seedlings

I planted seeds in a seed tray in summer 2018 and they sprouted this fall. I transplanted into 6" pots. I'm growing indoors in my south facing window, rotating 1/4 turn daily and placing outdoors in ...
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310 views

How to control fungal infection on Moringa

7 week old moringa grown from seed started exhibiting white spots and yellowing on leaves. The bottom ones died and dropped off, although new growth continues. Reading that it could be a nutrient ...
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63 views

Mango seedling's new growth is drying up

3 months ago I germinated a mango seed. For about a month the seedling was growing in a bottle of water, but then I decided to put it in a pot. At that time the plant was about 20cm high and had 5 ...
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78 views

Weak Tomato Seedlings 3 weeks in

I planted tomato seeds into a seed starting tray (one of those 72 pro hex ones) on May 8th and they germinated after only about 4-6 days. They've been growing well under led shop lights and I've been ...
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83 views

Hardening Off Cucumber Plants

I am on day 3 of hardening my cucumber seedling. They were initially out today when it was overcast and then is suddenly turned sunny and I went to check on them after about 45 mins of on and off sun ...
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77 views

Brown thing around Mango leave's veins

My 4 mango plants (from 5 to 8 months) are now struggling with weird disease. It started about 3 weeks ago, lower leaves got brown and finally gone. Now I have noticed brown thing on younger leaves. ...
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668 views

Broccoli and cabbage leaves are curling (seedlings)

This is my first year for growing anything and I am having some issues with my broccoli and cabbage seedlings. For the longest time (2 weeks) they have been doing fine but recently the leaves are ...
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32 views

Why don't my seedlings make true leaves?

I'm trying to start seedlings inside in order to lengthen my growing season (I live in northern New England). I have heating mats, and grow lights. I'm currently trying to start tomatoes, brussel ...
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1answer
13 views

Cabbage, Eggplant, and Cauliflower with white-ish dry spots

I've got eggplant, cabbage and cauliflower seedlings growing inside in peat moss with some all-around fertilizer (24-8-6). However, the edges of their leaves are drying and curling up, and some of ...
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1answer
42 views

How to help seedlings recover from tip burn

I germinated some seeds and I had the seedlings under a two new 40w LED grow light for a few weeks. I'm used to keeping florescent lights very close to the plants, but apparently this LED light is ...
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1answer
143 views

What is the difference between the VIVOSUN and VIVOHOME seedling heat mats?

Here are links to the VIVOSUN and VIVOHOME. They look the same?
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37 views

Is this a sign of deficiency? Lemon seedling

My month old lemon seedling put out its true leafs, however, the leaf has deep veins in the middle and its quite light in color on the leaf itself. I was wondering if this could be a sign of some sort ...
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1answer
23 views

Polyembryonic Honey Mango seedlings don’t look too good

My seedlings we’re doing good but now leaves are blackening at the base and at the tips. I recently moved the seed to a pot with drainage holes. I am using some organic bug pesticide. I have gnat ...
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1answer
39 views

How much drainage in seedling potting mix?

I made my own seedling potting mix. It has 35% drainage and 65% water hold matter. Now, that I see it, I feel like it has too much drainage. I used roughly the same percentage of as Sungro's ...
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1answer
149 views

Black Growth on Eucalyptus Seedlings (E. gunnii)

I have a number of eucalyptus seedling that are still quite small (from one to five centimeters). After bringing the ones I had outside during the summer back indoors most of them got a black fungus ...