Slow release fertilizers vs liquid fertilizer

JessJesting(6a (NE Ohio))May 25, 2014

What is everyone opinions on this? For potted indoor plants what is better? Slow release (e.g. Osmocote Plus) or liquid fertilizer? Do you think it is dependent on the type of plant?

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JessJesting(6a (NE Ohio))

I guess I should also say my question was in relation to indoor potted plants. Not outdoor ones. Thanks all in advance. =)

    Bookmark   May 25, 2014 at 10:18AM
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Ohiofem(6a Ohio)

I use both at a slightly reduced rate on both indoor and outdoor plants. This seems to work out well because when the plants are growing faster they get watered more so more fertilizer is delivered. When they go almost dormant in winter, they need less water and fertilizer.

    Bookmark   May 25, 2014 at 11:21AM
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JessJesting(6a (NE Ohio))

Thanks for your reply! I was worried using both would burn the plants.

    Bookmark   May 25, 2014 at 8:26PM
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seysonn(8a WA/HZ 1)

Eventually Slow Release will run out of steam. Then you can only top dress. So then that will act like liquid fertilized anyway.

This is my first year doing container planting, mostly peppers and a couple of tomatoes. So based on the recommended practice in this forum, I mixed some SRF to potting mix. Then I will have to read my plants and may fertilized with reduced strength liquid fertilizer later on. Both SRF and liquid fertilizer that I am using have 3N-1P-2K ratio.

    Bookmark   May 26, 2014 at 7:07AM
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gosalsk

Liquid is unquestionably better since you can control how much it gets and exactly when it gets it.

But most people don't have time for it.

    Bookmark   May 26, 2014 at 10:20AM
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jodik_gw

I also use both... it depends largely on the plant, the size of the pot, the medium... the season...

I'm a big fan of Al's Gritty and 511 mixes. I often use a liquid plant food plus a micronutrient during the growing season, backing off a bit with dilution during any dormant or winter season.

For larger plants I take outside during summer, I use Osmocote. Less work for me.

    Bookmark   May 26, 2014 at 8:03PM
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JessJesting(6a (NE Ohio))

Alright well the consensus seems to be use both! So that's what I'll do! I'll have to do more research on Als mixes. I had read a little about them but I haven't got the actual recipe. Thanks!

    Bookmark   June 3, 2014 at 9:05AM
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