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 Fertilizers

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requiemsong



Number of posts : 12
Location : Perth, WA
Registration date : 2009-12-22

PostSubject: Fertilizers    Tue Feb 07, 2012 2:22 pm

Lets talk fertilizers and where you stand on the issue.

For the most part, I've found it very difficult to get my hands on any decent cactus fertilizers such as Cactus Juice and things like that. I know there are products on the market with NPK readings of 0-10-10 but I just can't get them where I am.

At the moment, I'm using fish emulsion and sea-weed extracts. The former for growth and the latter to book root development. What do you use? Also, if you know anywhere, either online or a shop where I can get my hands on some good cactus fertilizer (in Perth) please, let me know.
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Hellonasty
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Number of posts : 1824
Location : NSW
Registration date : 2008-04-04

PostSubject: Re: Fertilizers    Wed Feb 08, 2012 11:27 am

I think it depends on what plants your talking about. For the larger fast growing columnar species I feel an organic fertiliser is a necessity such as manure of some kind or one of those formulated pellet fertilisers (which usually contain chicken poo and other nutes compacted together). I use this in combination with a slow release fertiliser.

I have recently bought this product for my larger plants and garden beds and find it is working very well.

http://www.scottsaustralia.com.au/Osmocote/Osmocote_Plus_Organics_All_Purpose


For miniatures and slow growers I try and avoid organic fertilisers (I do use a little) and just stick with slow release which I crush up into smaller pieces and use less than I normally would. I find for species such as Astrophytum and Ariocarpus they don't require much fertiliser at all and I only fert them at the beginning of the growing season and occasionally late summer.

Personally I don't know what all the fuss is with low nitrogen and cacti, I find cacti need a good supply of nitrogen to grow well and so long as the other nutrients are present there shouldn't be a problem given you don't over do it.

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My Cacti Blog, please come visit me.

http://astrophytum-and-friends.blogspot.com/

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Chef

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Number of posts : 32
Location : Mid/North Coast
Registration date : 2012-01-18

PostSubject: Re: Fertilizers    Wed Feb 08, 2012 2:35 pm

Does that mean you can use just a regular liquid fertiliser? Like an all round thing?
I pretty much only have Bunnings as an option here, so what should i go for? "miracle grow" or something for a certain type of tree or something? (just as an example i know it isnt but as an example like the ferts for specific citrus or something (worst eg ever!))
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Hanazono
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Number of posts : 825
Location : SA
Registration date : 2008-09-14

PostSubject: Re: Fertilizers    Sat Feb 11, 2012 12:40 pm

I use an organic fertiliser, chicken pellet manure.
I pack the pellet manure in a plastic box and watering from time to time and keep for 2 years. The pellet is matured in 2 years. I dried the matured pellet and keep for using as necessary.

I use the pellet for any cactus including Astrophytum and Ariocarpus. Putting small amount in the bottom of pot.
I mixed slow release chemical fertiliser in pottingmix also.

I use the pellet for the propagation of grafting stocks.
I use a pottingmix, 20% mixed pellet for 2 years old seedlings.
3~4 cm height seedling will be 15~20 cm height plant in a year, at 3 yeas old.

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http://frank-southofaridland.blogspot.com/
Hellonasty
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Number of posts : 1824
Location : NSW
Registration date : 2008-04-04

PostSubject: Re: Fertilizers    Mon Feb 13, 2012 7:31 am

Chef wrote:
Does that mean you can use just a regular liquid fertiliser? Like an all round thing?
I pretty much only have Bunnings as an option here, so what should i go for? "miracle grow" or something for a certain type of tree or something? (just as an example i know it isnt but as an example like the ferts for specific citrus or something (worst eg ever!))

Chef,
Simply put, Yes you can use a general fertiliser for cacti and you shouldn't have a problem. If you only have bunnings available try the product in the link I posted above it is available there (I think). Use that in combination with a regular slow release and you should be fine.

Bunnings also have some of the compacted pellet fertilisers too such as "Rooster Booster" etc.

HN

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My Cacti Blog, please come visit me.

http://astrophytum-and-friends.blogspot.com/

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mughal113



Number of posts : 18
Location : Lahore, Pakistan
Registration date : 2011-09-23

PostSubject: Re: Fertilizers    Mon Feb 13, 2012 4:46 pm

I use NPK 20-20-20 water soluble synthetic fert and plants respond to it very well.

-Mughal
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Lachy
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Number of posts : 733
Location : Langwarrin
Registration date : 2008-04-05

PostSubject: Re: Fertilizers    Sun Feb 19, 2012 1:14 am

I'm trialling a few different ferts at the moment.

Dynamic lifter and similar pelletised chook poo products seem to be great for columnars. Trichs in particular go ga-ga for these types of fertilliser and will respond by putting out lots of lush green growth. I've also found something of a flow-on effect with any scions that you may graft to trichs fed with the stuff.

I've also found dynamic lifter to be good with some mamms, pilosocereus and polaskia. It also seems to be good for the classic echinopsis, ferocactus and the larger opuntiads. Rebutias, conversely, don't seem to like it very much and I had a few losses that I suspect may be due it part to the addition of this to the substrate.

I've also got miracle grow - and it seems that popular opinion is to use this stuff at quarter to half strength when watering during the growing season. It doesn't seem to hurt the plants. Laughing

I think a general plant tonic like seaweed emulsion is definitely of benefit, particularly for plants that are looking a bit peaky. It seems to have a beneficial effect on recently rooted cuttings and it seems to ward off the dreaded black rot to some extent on rot-prone trichs.
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cactuscook
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Number of posts : 737
Location : Adelaide
Registration date : 2010-04-29

PostSubject: Re: Fertilizers    Sun Feb 19, 2012 9:13 am

I couldnt agree with Lachy any more seems we use the same.
Dynamic lifter in my mix.
Miracle grow as a liquid fert at 1/4 to 1/2 strength only a few times during growing season.
If you are regularly repotting your plants they probably don't really need any additional liquid fert but it wont hurt just remember don't over do it they are cactus after all. Smaller slower growing species i do not give any fert other than a smaller amount in the mix.
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pricklypear



Number of posts : 17
Location : Aus
Registration date : 2011-11-22

PostSubject: Re: Fertilizers    Thu Apr 19, 2012 11:35 pm

Hellonasty wrote:
Personally I don't know what all the fuss is with low nitrogen and cacti, I find cacti need a good supply of nitrogen to grow well and so long as the other nutrients are present there shouldn't be a problem given you don't over do it.
I'm in the same boat as the OP. Care info sheets provided by local cacti suppliers say to use low nitrogen fertilizers yet no brand/type is suggested. I can't make head or tail of the ingredients listing on local Osmocotes. Reading overseas forums, NPK rated fertilizers appear to be the norm but not so here. I've noticed commercial cactus mix all seem to use the same slow release fertilizer - little dark green plastic balls. Anyone know what it is?

p.s. finding this topic was not easy. I typed "fertilizer" in the ACF search box and nothing came up in topics or posts (and it required me to log on). Suspicious, I Googled: "Australian Cacti Forum" fertilizer ... and it brought up the results immediately and no need to log on Smile
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pricklypear



Number of posts : 17
Location : Aus
Registration date : 2011-11-22

PostSubject: Re: Fertilizers    Tue May 01, 2012 12:22 pm

pricklypear wrote:
I'm in the same boat as the OP. Care info sheets provided by local cacti suppliers say to use low nitrogen fertilizers yet no brand/type is suggested. I can't make head or tail of the ingredients listing on local Osmocotes. Reading overseas forums, NPK rated fertilizers appear to be the norm but not so here. I've noticed commercial cactus mix all seem to use the same slow release fertilizer - little dark green plastic balls. Anyone know what it is?
I spent some time at Bunnings reading the ingredients of various fertilizers. Most if not all have high nitrogen including the Osmocotes. What I did notice is that specialist formulations e.g. for potted, flowering plants etc. had high concentrations of heavy metals - lead, cadmium etc. So if one is looking to fertilize edibles such as dragon fruit, prickly pear etc. it's wise to use a fertilizer that's intended for vegetables and the like. These are usually labelled as "general purpose" but check the label just to be sure.
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