Fertilizing in Winter?

Q: I'm a bit confused about what winter fertilization schedule I should follow in South Florida. For blooming plants, usually, I use a monthly granular bloom booster fertilizer as well as a liquid fertilizer every 10 days or so. Should I continue that schedule in the winter as well? Should I stop fertilizing altogether in the winter? How about fruit trees? What fertilization schedule should I follow in the winter?

A: Here is a general fertilizing schedule for established plants that we follow here in SW Florida.
The rule of thumb is, do not fertilize (with macro- NPK elements) when minimum temperatures drop below 65F and stay at that level for more than 7 days. At this temperature point, most of the tropical and subtropical plants slow down their metabolism and some of them going into dormancy. This means, nutrients are not consumed as much as during active growth period, and built-up nutrient supply within a plant plus whatever is available in the soil is just enough to get by through the winter. So additional fertilizing is not necessary. You may continue micro-element supplements and bio-stimulants throughout the year. In fact, it is highly recommended to do so, to help the plant survive cold spells. These are very effective tropical plant protectors:
SUNSHINE-Epi - Brassinosteroid plant hormone
SUNSHINE-Power-Si - Advanced plant protector with Silicon
SUNSHINE SuperFood - Complex microelement supplement

This rule is applied to both flowering and fruiting plants, in general. However, some species are winter-flowering and winter-fruiting. For those, you can make an exception and provide extra nutrients for flowering and fruiting, as long as the weather stays warm. During cold spells, avoid any NPK fertilizers and use only bio-stimulants and micro-elements. If you apply NPK during cold, it won't be consumed by a plant, build up in the soil, and may create a root burn situation.

In simple words, fertilize from March to October. Give plants some rest from November to February.

Helping plants to survive winter:
SUNSHINE BOOSTERS - FROM SUNSHINE STATE

A magic plant hormone so wanted by gardeners, is finally here! When people purchase plants and trees either on-line, or from their local nursery, expectation and anticipation for their new find is high. Many times, however, disappointment is encountered due to a variety of reasons. These reasons include changes in light, temperature, water, soil conditions and transportation; just to name a few. So how can the stress on newly transported and transplanted plants be mitigated? Easy! There are plant stimulators able to reduce the shock encountered.

One such plant stimulator, produced at TT Laboratories is SUNSHINE, a revolutionary, broad spectrum, plant stress reliever. Extracted initially from plant pollen, SUNSHINE can bring back and keep the vigor to stressed plants in both the home and garden. Sunshine is indeed a plant stimulator on the cutting edge of plant care technology. Reasonably priced, and easy to use, SUNSHINE will be your plants' best friend, next to yourself, of course.

SUNSHINE will help your plants:
- recover from stress
- dramatically increase growth rate
- get profuse flowering and fruiting
- improve disease resistance, cold hardiness, and heat resistance
- promote seed germination and root cuttings easily

Great for indoor plants and improving cold tolerance!

Line of products:
SUNSHINE-E - general plant booster, growth stimulator and immune booster
SUNSHINE-BC - Bonsai and Caudex developer
SUNSHINE-S - seeds and cuttings pre-treatment
SUNSHINE-T - Thermo-protection for overwintering tropical plants
SUNSHINE-Micro - ultimate micro-element mix from TT Laboratories

On the photo: Tomato seedlings, with and without Sunshine-E treatment; 1 week after treatment, 09-01-2016. Continue reading...

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Fertilizing a Mango tree in container