1) Rust Spots 2) Harvest time?

Hello Everyone,

Back again for some new noob questions!

I have 2 Autoflowers, 1 is Northern Lights, the other is Blueberry.

I am currently on week 9 of my grow. Should have 1 week or so left, based on the seed suppliers guidance.

This is my setup:

Grow tent - 0.8x0.8x1.6m
Light- 600W LED VIPARSPECTRA
Light height: heightest it can go (limited on height)
Humidity: 30-50%
Temperature: 24-25c (night and day)
Growing Media: Soil
Pot: 12L Airpots
Nutrients: BIOBIZZ (Root Juice, Fish Mix, Bloom)
Water PH: 6.5
Water Temp: 18-23c
Latest feed: 12 July - 2.5l water each mixed with 15ml BIO Bloom.

As I will be watering them tomorrow, I am going to water with just PH water until ready to harvest. I have been told to flush them before harvest. Is that right?

I have had a few rust spots appear on some of the sugar leaves. I have read that it is because I have overfeed them. Is this going to be a problem so late into my grow? Should I cut the leaves off that have the rust spots? Lost with what to do.

Also, this is my first grow and I am not sure if they are ready to harvest now, or not.

Would love your opinions, please?

I know I can probably find this stuff online, but I personally think it is better to have an experienced opinion.

I have included pictures below.

Many Thanks

They look good Nice job. Now the hardest part, patience. You have 3+ weeks left on the NL and probably 2+ on the Blueberry. You will be amazed at how much bigger those buds get in the next few weeks. You don’t need to press so hard with the fertilizer. Nice and easy, let the plant do her thing.

Merlin1147 said:

They look good Nice job. Now the hardest part, patience. You have 3+ weeks left on the NL and probably 2+ on the Blueberry. You will be amazed at how much bigger those buds get in the next few weeks. You don’t need to press so hard with the fertilizer. Nice and easy, let the plant do her thing.

Click to expand...

Thanks, Merlin. I'm quite happy with them for my first grow.

Do you think I should feed each plant different amounts of nutrients, carry on feeding both the same, or just water them with PH water until harvest?

And what is your opinion on the rust spots? Shall I just leave them?

Thanks.

I not sure about the Biobizz. fertilizer schedule but if they are like most others they are more concerned with fertilizer sales than plant health. At your stage I’d be at 2/3 rates on NL and 1/2 on the Blueberry For a week and dilute down gradually till the end. Just water for the last couple of waterings. But thats just me.

I agree those look fantastic... but at least 3 weeks to go. Most of those white hairs have to turn brown first and then another week or two. But you'll be so happy you waited.
Are you adding cal mag? Those spots could be a deficiency too. Lowering the other nutes may make those needed more available.
For a first grow in particular you're doing top notch!!