Florida winters and gardening

From Anna Banana, our Garden Center customer advisor.

Cool weather - no sweat. Here in Florida we are blessed to have warm winters. We just went to the beach for Christmas! Winter time is not only a good beach time, but also the best planting time here. Why? I always refer my customers to Murray Corman's article Tropical Planting Breaks the Rules. "...Wintertime does not just mean hard work for tropical gardeners. It is also a time to enjoy the fruits of our labor. Winter-blooming plants and the visitors they attract - birds, bats and butterflies - make the garden as enjoyable in winter as any other time of year. Tasks performed during the spring and summer up north have to be done during the fall and winter here. Why? The answer is elementary: It's too hot! Taking advantage of the coolest months of the subtropical year for heavy chores like planting trees has a twofold benefit: The gardener can make hay while the sun shines without getting heat stroke and the plants appreciate the moderate temperatures, enjoying a break from the stress of 93 degrees in the shade..."
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Winter flowering plants - are a blessing for a tropical gardener. See below what's blooming now! See our recommendations for winter flowering and fruiting plants (PDF).

How much water?

Q: I have purchased many tropical plants from you throughout the summer and now I need to think about how not to kill them overwintering in my NY apartment. I was told that overwatering can be a big problem for house plants in winter. How much should I water, and how many times per week?

A: Overwatering in the number one cause of the houseplant death. But be sure not to underwater, either.

- Don't water on the fixed schedule, get to know your plant's needs instead. Most plants only need watering when the top 1/2" of potting mix is try. gently poke your finger into the soil to test it. Some experience gardeners go by weight of the pot - a very light pot will have a dry mix.

- Aim to make the potting mix moist, but not wet. Most plants hate sitting in soggy potting mix, so always let excess water drain away.

- Potting mix in terra cotta pots dries out more quickly than that in plastic or ceramic pots, because terra cotta is a porous material.

- Most plants need less water in winter because they are not actively growing and need this period of winter rest. However some plants are winter bloomers and they may need regular watering providing bright light to produce flowers, for example clerodendrums.

Overwintering tropicals indoors and air humidity

Q: My rainforest plant collection thrived outdoors in our humid summer (I live in Maryland) but of course I had to bring them indoors for winter and now with snow outside they are suffering. Some leaves dried and fell of. Please advise how not to lose my babies over winter!

A: When overwintering tropical plants indoors, think about 3 factors: light, temperature, and humidity.

Light. Providing bright light is obvious, and all indoor gardeners are doing their best to have as much well-lit spots for their plants as possible.

TemperatureTropical plants, especially those from rainforest, do not enjoy significant fluctuations in temperature, so avoid following places: - neat hear register (or air conditioning vent) - in drafts - on a windowsill behind curtains at night

Humidity. Most tropical plants need more humidity than is available in the average, centrally heated home, but some rooms, such as bathrooms and kitchens, are more humid than others. To created humidity, fill a tray that is the same width as a plant, with pebbles or gravel. Pour in water, keeping the level at just below the top of the pebbles, then place your plant on top. The water will produce humidity as it evaporates. Alternatively, mist the leaves using a hand mister in the morning, so leaves dry before night. If you have hard water, use distilled or rain water. Grouping plants together will also increase humidity.

Winter mulching in Southern landscapes

"My rule of green thumb for mulch is to double my initial estimate of bags needed, and add three. Then I'll only be two bags short." (Author unknown)

Q: What is the best time for mulching in Florida? What type of mulch do you recommend and how much should I use?

A: Every gardener knows that spreading mulch in the garden helps to protect the soil in general, prevents weeds from growing, plus it has specific benefits during harsh winter conditions. A layer of mulch will keep the soil insulated, roots protected from possible freezing, so you'll also end up with better results in spring by laying down mulch in the cold months.

When? We lay mulch in our Florida garden right now. It is cool so we work twice more efficient. After rainy summer-fall season, most of mulch around plants had broken down and in many areas soil is exposed: easy target for weeds.
In general, in warm climates Fall and Winter mulching is the most effective. Mulch creates an insulating barrier between the soil and air, thereby protects plant roots from rapid fluctuations in soil temperature.

How much? There is never too much mulch. Just make sure to put it 2-3 inches away from the trunk to prevent rotting and mold.

What kind? Different types of mulch can be used, including wood chips, shredded leaves, straw and hay. Yes, leaves and hay too! Remember all green parts of a plant (= your leaves and grass) are full of Nitrogen so important for plant vigor, it eventually will go back into the soil as extra benefit. Unless you want to spend a fortune on a fancy red or cypress mulch, you may use these natural materials that are handy in every garden. After raking leaves, pile them up and in couple weeks of drying and breaking down leaves will become a perfect, soft mulch that is best to use around fragile and herbaceous plants. After mowing your lawn, save the cut grass and use the hay as mulch. It always works the best in our garden, keeps weeds away better than wood chips, and in spite of a common belief that cut grass is full of weed seeds, we never seen grass or weeds sprouting from that hay.
Happy mulching and stay warm!

When should you start growing plants from seed indoors?

"Happiness held is the seed; Happiness shared is the flower." (John Harrigan.)

Q: Our growing season is very short so I decided to start some of tropicals from seed indoors. When should I start?

A: It is always a good time to start from seed. If you want to feel happier, get into gardening. If you want to feel God, start plants from seeds and watch New Life grow from a tiny grain.
Traditionally, people prefer sowing seeds in Spring, especially temperate species for vegetable garden: tomatoes, peppers, cucumbers... My grandmother up North started them in early Spring in small pots on a windowsill, then once the temperatures raised just above freezing, she planted them out in garden beds, and that early start always helped her to have the best early harvest in the neighborhood.
When we deal with tropical plants, "just above freezing" is not warm enough. Which means, you have to grow small babies indoors for quite a while, providing additional heating when needed. Heating pads always work best... When we had large size monitors and TV's, I always put couple trays on top of hot monitors, and even on warm top of a refrigerator, if space by the radiator was all taken. But that was in very cold apartment...
If you keep your living space around 75F (ideal for many species), this is a perfect temperature to get your seeds started. Tropical plants are not like annual tomatoes that try to grow through the season as fast as possible. They may take time. So the sooner you start, the more chances to get small seedlings just in time when Spring air outside is warm enough - at least in 70's.
A great advantage of starting tropical seeds indoors is controlled temperature and moisture. In the plant world, environment extremes are not good for germination process. Mild conditions of your home or a greenhouse create better chances for successful growth. Seeds won't get overheated in hot Summer sun, and won't get rotten because of a sudden heavy rain. Just keep in mind that some species require light for good germination.

Conditions for the best seed germination:

- Soak seeds for a few hours. Adding a few drops of Sunshine Seed Germination booster is very beneficial and improves germination rate by 30-50%
- Well-drained mix, you may use our Professional Seed Germination Mix. Put seeds not too deep (1/2 inch deep or less) to allow air circulation
- Keep warm (75-85F) and in bright light
- Keep soil slightly moist but not soggy.

See more info on seed germination

Check out our seeds selection.