Flower nutes???

[shroomie_glen]

Hello fello icmaggers...

I'm growin outdoors in miracle gro sl0w release nutrient soil. Now that my plants are 2-3 weeks into flowering, a few of the bottom fan leaves have turned yellow/then died. Other than water, they havent gotten any other nutrients than what the miracle gro soil had to offer. What nutes should i add to help my girls out? Or is that the problem at all? Any input would be helpful, as i am a newb.
Thanks for your time and dedication, shroomie_glen

 

[Guest]

ARE THE plants in containers? if so what size. did you repot? were the plants outdoors since clone/seed? need more info.

 

[Blackvelvet]

Slow release ferts lack calcium and magnesium. They also lack all 6 micronutrients (iron, manganese, zinc, copper, boron, and molybdenum). What they do add is nitrogen , phosphorus (p), and potassium (k) and I think sulfur.

Bottom yellow leaves could be lack of n, p, k, or magnesium.

Test ph and see if you need to raise ph. You would then add powdered/pulverized dolomite lime to the surface to give you calcium and magnesium.

If ph is ok, you can add cal mag to your fert water. 1/4 teaspoon calcium nitrate or powdered gypsum and 1/4 teaspoon epsom salts per gallon of water. Calcium chloride could be used for calcium but this requires net weight of the bottle and % ca. Calclium chloride might be sold under names like tomato blossom end rot stopper. Easily disolvable gypsum you can get at the brew your own beer stores. Epsom salt and gypsum give you valuable sulfur.

So, this leaves adding npk and the 6 micros to add to your fert water. Select a fert low in ammonia/urea and high in nitrate nitrogen. Avoid potassium chloride. You might only use 1/2 strength ferts in your water since slow release ferts do add some nutrients.

Ph is important. At least get ph test strips from a brew your own beer wine store or the aquariuim section at a petstore. Adjust fert water ph before giving to the plants. You can also test soil ph.

How to test soil ph: After watering and ferting well, wait 30 minutes. Then apply some distilled water to the pot surface. Get 1 or 2 ounces of runoff and catch on a saucer. Test this ph. If you can tilt the pot and get some liquid out after watering/ferting and waiting 30 minutes, you can test that instead.

Another more accurate way to test ph is scrape soil mix off the rootball. take 1/4 cup soil mix and mix with 1/4 cup distilled water. Stir. Wait 30 minutes. Test ph.

 

[inflorescence]

Another more accurate way to test ph is scrape soil mix off the rootball. take 1/4 cup soil mix and mix with 1/4 cup distilled water. Stir. Wait 30 minutes. Test ph.

If your in soiless and you top water the nutes will percipitate on the top as the water evaps so the very top of the soil will have an unusually high nute concentration.
Also most soiless growers, when removing the rootball from a container find a mesh of roots encircling the perimiter of the inside of the container and wouldn't be able to find much "soil" there to scrape off.

 

[toohighmf]

PH

PH

is more important than anything. do you have any way of metering your ph?
Do you know the TDS of your water? tap, well, or R/O? are your plants growing or do they look like they stunted? Growth rates should be gradually slowing after the transitional phase to bloom. what are you growing in? pots? directly in the ground? how are you watering?

 

[shroomie_glen]

Yes, i'm growing in pots (5 gallon buckets) Yes the plants have been outdoor since february. I water with tap water (ph 6.5) My soil ph is 6.7

 

[Blackvelvet]

Yes, i'm growing in pots (5 gallon buckets) Yes the plants have been outdoor since february. I water with tap water (ph 6.5) My soil ph is 6.7

Those slow release ferts only last about 3 months so they may be gone. Apply an npk fert with all 6 micros. You can't add dol. lime to get cal mag because your ph is on the high side...you don't want it higher. So, add cal mag to your water using the suggestions I gave before. You can mix the cal mag with the npk + micros fert.

 

[Guest]

Yes, i'm growing in pots (5 gallon buckets) Yes the plants have been outdoor since february. I water with tap water (ph 6.5) My soil ph is 6.7

bingo bango...... no ferts left in the soil. use a product like floranova which is all you need in one bottle. start with 1/4 strength and work up.

 

[inflorescence]

Next time, you could use osmocoat or nutricoat as some of those slow release resin balls last up to 6-8 months.
All you would need to drag to the outdo site is water.
Your buds will probably taste like shit but you gottta do what you gotta do.