Jacks Classic Fertilizer

[iiwii]

I just picked up a bottle of Jack's Classic Liquid Orchid food and was wondering if anyone has used this. On the website I saw several other products to use in conjunction with this bottle and wondered how necessary they are. The bottle itself has a 7-5-6 NPK value. Any input would be great.

Thanks
Pete

[King_of_orchid_growing:)]

Try it out, see if it works.

If it's urea free, go for it.

[RosieC]

Never used this one. I don't generally bother with other products or with bloom boosters.

7-5-6 is fairly balanaced but fairly week. Orchids need weak fertiliser but it tends to be more expensive to buy weak stuff as you will use it up more quickly. I like to buy strong then dilute it more.

Using Ray's calculator (you can find that here) and assuming watering weakly with a flush once every 4 weeks it suggests you would need to use that at 1.9 teaspoons per gallen or 2.48 ml per liter. If you water on a different frequency (in general always go by if the plant needs, not a set frequency) or flush a different number of times then have a look at Ray's calculator. Just enter the N number (7 in this case) and the number of times you flush and water and click calculate.

[Connie Star]

I've been using Jacks Classic and the Bloom Booster for the 2 years I've been growing orchids, with good results. I realized recently (thanks to rays calculator) that the recommended mixing ratio is very weak. I don't have that many orchids (75 or so) so the cost isn't too bad. I prefer the liquid for mixing- just easier.

[Orchid126]

Jack's Classic and Bloom Booster are good stuff. Lots of macro and micro nutrients. The Classic is best when the plants are growing, the booster is best near blooming time.

[tucker85]

I used Jack's Classic for two or three years and always had good results with it. I've used the liquid and the dry. Both seemed to work fine.