Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy

Accept

Recommended

Recommended

Grow QuestionsLow cal mag?

Low cal mag?

PortkeyCannabisstarted grow question 2 years ago

Is this low cal mag? Or just recovery from the nute burn? It looks like new growth?

PortkeyCannabis

Solved

Leaves. Color - Yellow

like

123Growanswered grow question 2 years ago

Soooo, I would ask you where are you in flower. Plants don’t need Calcium in flowering. They do need magnesium for about 300 separate processes tho. I would say add 1/2 tsp Epsom salt with 1/2 TBSP molasses ( sulpher free) in 1 liter of water. This would also rule out a few other things without using nutrients that could block out something else. It would rule out or rule in potassium which also causes yellowing of the leaves. Magnesium will also have spots along with the yellowing btw, magnesium deficiency isn’t just yellow alone.

2 likes

Complain

Selected By The Grower

Hashyanswered grow question 2 years ago

Definitely looks like a magnesium deficiency, add some cal mag I know your in living soil but it's definitely lacking some mg.

1 like

Complain

CRiSPrGrowanswered grow question 2 years ago

Hey Portkey, that's magnesium deficiency , always have to have calmag on the go. Hope this helps ! 🚀

1 like

Complain

Similar Grow Questions

Solved

Yellow and pale leaves of plants. Purple stems.The week before flowering, I flushed the pots and brought the tds to 700ppm. Don't you think the leaves are dull? I feel there is a problem??

Leaves. Color - Yellow

2 months ago

22

6

Solved

Overwatered cubes in hydro? Too close to the sun? or effect of having add Hi All, I have issues with my first hydro grow - i effed up. I think i was too slow in the transfer over in the tank. Light is 200 PPFD, EC at 0.6, and barely added any nutes. Did i manage to overwater some of these plants by having them too close to the net pot?

Leaves. Curl down

Leaves. Color - Yellow

Setup. Substrates

2 months ago

3

Solved

What do you think the problem could be?There’s something going on with some of these plants and I can’t seem to identify the problem so far. I have been doing a lot of research and I’m in a process of elimination at the moment but the plants growth hasn’t been affected. I will continue to try treat the problem.

Leaves. Color - Yellow

2 months ago

3

3

Solved

Normal color or Something to consider ?Look at the pictures, two plants Geplant on the westside just is more yellow ich when the one on the right side. What can this mean? W 4 flower 6.5ph 1.3 vpd 40dli

Leaves. Color - Yellow

2 months ago

1

4

Solved

Autoflower slow growth / yellow Can't figure out some of the issues I'm seeing. Tried adjusting humidity (40-60% now) and not overwatering. Temps 19 night time, 26 day time. Added a tiny 1ml/litre feed of plant magic old timer grow yesterday They're very small and sprouted 3 weeks ago. Please

Leaves. Curl down

Leaves. Color - Yellow

2 months ago

8

3

Solved

Deficiencies Updating this because the pictures I last uploaded didn’t show what I wanted to show. I feel like 2 of my gorilla autos are struggling especially the one that’s kinda twisted looking. Any help?

Leaves. Twisted

Leaves. Veins - stay green

Leaves. Color - Yellow

2 months ago

5

3

Solved

Mangel, zuviel Dünger oder normaler Prozess Meine Pflanzen sind jetzt tag 44. 1 xThink different gelbe Blattspitzen, Maßnahme ich dünge nicht mehr seit 6 Tagen. Nur ph 6,0 Wasser calmag biobizz. Die Red poison gelbe Blätter bzw. Das grün geht raus und die grossen Fächerblätter werden langsam gelb. Mangel?? Zuviel Nahrung?

Leaves. Color - Yellow

2 months ago

3

3

Solved

Delaying Senesence?Delay Senescence in cannabis while employing a staggered harvest? Is this possible? I'm thinking about cherry picking my top colas as they are milky and starting to turn to amber. There are also new bud sites that I wish to feed and maximize yield.

Leaves. Color - Yellow

Setup. Strains - Photoperiod

2 months ago

3

2

Solved

Day 20 Flower. Leaves curling Leaves curled over 12 hour light cycle. Ph 6.0. Ppm 950. I have been battling ph drop for a week. Lowered Ppm to 900 from 1100. Seems to have stabilized the ph and now the leaves are doing this. I’m looking to do the day 21 strip of most leaves tomorrow. Should I be concerned?

Leaves. Curl up

Leaves. Color - Yellow

3 months ago

3

Solved

ObserverInterest

Yellowing tips Changed nutrients as I am Now flipping to flower. What is the yelllwing of the tips of the leaves

Leaves. Color - Yellow

3 months ago

2

Solved

Someone help me please: I why is this happening?50 sativa 50 indica -photoperiod -4 week flower -height 50cm system : ebb&flow tank 60 liter airpump 35 litres/min water pump : 15 min run 45 min stop and again and again use ro water ph :5,8-6,2 EC : 800-880 (us) the device only shows 88, but you have to multiply by ten

Leaves. Too few

Leaves. Tips - Burnt

Leaves. Color - Yellow

3 months ago

1

1

Solved

Papi_Chulo_Germany

What my plants need?Hey growmies. Since yesterday my plants noch look that healthy then before. Some leaves start to get brown points and changed to yellow colour. Someone can tell me what is the problem and how I can fix it ? Thanks for helping me 🙏🙏🙏🙏 And sorry for my bad English 😅😅🙈

Leaves. Color - Yellow

2 months ago

2

2

Solved

Day 14 Super lemon haze, First time grow. Soil is happy frog with perlite (75/25). Transplanted two days ago and watered. Haven’t added newts just 7.0 water. Started this deficiency before the transplant as well. Temp 73 Humidity 50% Light spider sf4000 - 60% Plant to light 4’

Leaves. Tips - Die

Leaves. Color - Yellow

2 months ago

2

2

Solved

Feuilles jaunes en floraison : carence malgré BioBizz AllMix J'ai un problème de jaunissement assez prononcé des feuilles de mes plants après la fin de l'étirement. Presque toutes les agendas sont touche avec de grosses feuilles qui jaunissent rapidement Je cultive en terre BioBizz Mix et évite l'apport d'azote car j'obtiens des brûlure.

Leaves. Color - Yellow

2 months ago

5

5

Solved

StonedHermitgrow

Trying to see if she is healthy or not So my northern lights is 7 weeks old and im seeing a lot more brighter color in the leaves around her colas up top Lately so im just trying to see if shes ok or not ik that the red in the stems is Genetics but the leaves are what have me Wondering last pic i power is 25%

Leaves. Color - Yellow

2 months ago

3

5

Solved

Week 5 Flower Brown Leaves I’ve been dealing with this discoloration since veg. Does she need cal mag? Is this ph float I’m not catching?

Leaves. Color - Yellow

Leaves. Color - Dark-brown

2 months ago

6

Solved

Big_Buds_Good_89

Fine or no?I just put this in soil about 2 - 3 days ago. Why are the leaves yellow?

Leaves. Color - Yellow

2 months ago

1

Solved

Yellowing from the veins A few leaves on 2 plants yellowing from the inside (veins are yellow, not the main leaf). Spot the deficiency! Plants are auto tangerine dream and auto wedding cake. Both in living soil ph 6.5-7, feeding with fox farm trio. 59 days

Leaves. Color - Yellow

2 months ago

4

4

Solved

Help: potential over fertilisation or over waterning I used Biobizz bio grow, 2ml/L and sprayed them more than usual. The tip of the leaves is getting yellow. 2 plants have the leaves pointing down and seem more textured and tick. The other 2 (the biggest) seem better, but the yellowing of the leaves is more evident. Check the diar

Leaves. Curl up

Leaves. Color - Yellow

Feeding. Other

2 months ago

5

2

Solved

Spots on leaves One of my girls seems to have some spots on the leaves. She has been like that ever since sprouting. Is it just genetics or is it potentially a disease?

Leaves. Color - Yellow

Leaves. Color - Pale

2 months ago

2

4