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  • 2 Post By opaline

Fertilizing, Superthrive, watering frequency

This is a discussion on Fertilizing, Superthrive, watering frequency within the New Growers: Ask the Senior Members forums, part of the New Growers category; My Phal 's all have spikes. Yeah! I understand about reduction of watering while a ...

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    Default Fertilizing, Superthrive, watering frequency

    My Phal's all have spikes. Yeah! I understand about reduction of watering while a plant rests but, what about Phal's? How often should I fertilize, i.e. every time, every other? I purchased some Superthrive. Now that I have some, how do I use it, i.e. spray or as if I'm watering/fertilizing?

  2. #2
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    Superthrive can be used directly applied to media and roots and/or foliar. It is super concentrated so dont be tempted to add a little extra in hope of doing good. Over used it can deform foliage growth and spikes/blooms.

    Good stuff though in moderation. Superthrive and seaweed extract equally get my recommendations.
    Did post it prev i think 0.25ml per 2 litre, could be wrong without cross checking, am using seaweed at mo.
    Very weak doses of fertilizer for phals whether high nitrogen to support general growth roots and foliage or high phosphorus/potassium for spike/blooming. No need to apply fert if spikes are matured.

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    opaline - you're the man! Thanks.

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    Phalaenopsis grow continuously throughout the year without a rest period so they will always need water and fertilizer. But in the winter months the days are much shorter, the sun light is less intense and the temperatures are lower. For all those reasons phals require less water and less fertilizer. I just read an article about a study done with commercial phal growers. It said that after phal spikes reach 10" in legth fertilizing or not fertilizing made no difference in flower count or size. It did say that phals that were given nitrogen while in bloom held their blooms longer than those that didn't receive nitrogen. I don't use Superthrive but I do know many growers who love it.

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    I would save the Superthrive until after the phals are done blooming and then apply in the water. Continue to water and fertilize on your regular schedule. Flowers are mostly made up of water and underwatering will cause the flowers to get wrinkled. The only reason to water phals less is that they need less water in the winter because of the shorter days - not simply because they are blooming.

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    Hey Bob, just briefly point out if you were previously unaware, superthrive is largely a hormone not to disimilar from rooting hormone products and their ingredient variations and strengths. IMHO possibly a tonic more than a fertilizer aswell. I did not class as a fertilizer at all in my orchid care procedures, now merely replaced/ substituted with seaweed extract for same purpose. Dunking plants completely such as newly arrived bare root samples into a strongly dosed bath/ bucket will cause cell membrane collapse/ external leaf tissue damage. While 'too' cold water can cause this, strong dilution of SP can also be responsible.

  7. #7
    GenevaDad's Avatar
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    Quote Originally Posted by opaline View Post
    Hey Bob, just briefly point out if you were previously unaware, superthrive is largely a hormone not to disimilar from rooting hormone products and their ingredient variations and strengths. IMHO possibly a tonic more than a fertilizer aswell. I did not class as a fertilizer at all in my orchid care procedures, now merely replaced/ substituted with seaweed extract for same purpose. Dunking plants completely such as newly arrived bare root samples into a strongly dosed bath/ bucket will cause cell membrane collapse/ external leaf tissue damage. While 'too' cold water can cause this, strong dilution of SP can also be responsible.
    So, IYHO you wouldn't use this rather, use seaweed extract? Do you water/spray with seaweed extract?

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    Recommend both, but highlight the few minor control measures/ cautions required, applicable to using s.thrive. I viewed the minor cautions/ warnings offered on the net when I was using ST for the first time and evidently resulted in corroborating these few but minor risks stated with over use.

    Both can be applied through watering/ spraying, but have not had any reason to advise caution with using the seaweed product i.e no negative effects/ results. By all means use it ( ST). If by chance the seaweed product was harder to source next time I wouldn't hesitate to use ST for pure convenience.

    Both are beneficial aids promoting and stimulating healthy and vigorous root and plant growth so your options are opened slightly. I use seaweed extract, a few drops alternate/ every other day in sprayer/ mister. Substantial root and plant growth in this time ( and we have gone into winter now) to confirm its benefits and ofcourse recommending it.

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