EASY GROW-BOX

How to quickly germinate tropical seeds in winter

Q: I live in the New England area where the winters are very long and dreary. I plant both a veggie and flower garden during the warmer seasons and am especially fond of growing chili-peppers. On account of most chili's longer growing seasons, I need to get already established plants in the ground as soon as the weather is warm enough. My problem is that despite my best attempts to germinate and grow seedlings ahead of time - even in my sunniest window - I just can't seem to keep the soil evenly warm enough to get them to germinate, no matter how warm the room is kept. And on the occasion they do come up, the seedlings always seem to remain weak and stunted, likely owing to the especially low humidity of winter. I also tried using an electric seed-starting heating pad, and the results were only a little better. Are there any tips you could give me?

A: Yes, I understand your issues and can sympathize! While it might be surprising to some, even here in sunny S.W. Florida, there are long stretches of winter weather where the ambient temperatures are simply too cold for germinating many of the more tropical seeds, such as the notoriously warm-weather chili-peppers. Also, I am likewise a fan of chilis, and always have at least a few different kinds growing at any given time. I have two great suggestions...

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Plumeria cold protection

Q: We have a purple-flowering plumeria which resides on our sunny deck during the warm months and then Winter vacations on our back porch where we can close the plastic film windows and where it stays above 50 degrees (overnite) until it can get moved outside again. We live in zone 8+ in South Carolina and I would love to plant it outside. Do you think if we ghost-covered it when alerted that we would have an overnite freeze, that it would survive being planted in the ground and recover to flower when warm? I don't believe the soil in our yard has ever frozen below the top 1/2 inch or so, and never for more than a few hours at a time. What do you think?

A: Plumerias are tropical plants, which means, they need frost-free environment. Even if the ground is frozen only on "the top ½" or so" - this may be enough to kill the plant. From our experience, plumerias can withstand a few hours of windchill frost (not frozen soil), but even if they survive, they may get some branches damage, and recovery may take so long that the plant may not even bloom the next year. So I wouldn't take that risk even with a ghost-cover cold protection. We have customers who grow tropical plants in the ground in colder areas, but they have greenhouse protection: this means, the soil is warm and the air temperature is maintained above 45-50F. For example, this Greenhouse in Virginia.

We recommend to continue growing your rare plumeria in container and move it inside when temperatures drop below 50F (recommended) and for sure when they drop below freezing. Plumeria can take a cold night (a few hours of upper 30's) as long as it is followed by a nice warm sunny afternoon with at least upper 50s. Otherwise, keep it indoors. The good news is, since plumerias are deciduous and have no leaves in winter, low light level won't affect the plant.
Just make sure to minimize watering and keep the plant on a dry side until it starts growing new leaves in Spring. You may continue fertilizing once a week with half-doze of Sunshine boosters - Sunshine TotalFeed. This will maintain the plant healthy and prepare for the blooming season in Spring.

Hardy Dwarf Red Jade Vine

by Onika Amell, tropical plant specialist

Q: I simply adore Jade vines. I think they are the Queens of all the vines! I have been very been successful growing the green Strongylodon macrobotrys and purple Jade Mucuna pruriens vines here in Clewiston Florida but I am struggling to make the Red Jade vine (Mucuna benettii) thrive. It keeps dying on me during cold snaps. Any suggestions?

A: ...Here is our solution for you. Consider growing a Dwarf Red Jade Vine or Camptosema grandiflora. It is closely related to the regular and ultra tropical Red Jade Vine Mucuna benettii but much tougher and hardier. It is considered to be one of the more cold hardy of the Jade Vines...
This gorgeous, rare and unusual vine is a sheer showstopper. It is easy to grow and it will reward you with long fiery chains of dangling orange-red flowers that bloom from late fall to early spring. Even though it is listed as a dwarf do not be fooled. This vine will get quite large and will need a strong support over time. The flowers are long and heavy and will show best when planted on an arbor or pergola where they are able to hang down and wow you and your visitors. It puts on a wonderful display. Butterflies, bees and hummingbirds will all thank you for growing this stunner!...

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Pavonia for hummingbirds - a cinch to grow!

by Mark Hooten, the Garden Doc

...Flowers of the Brazilian candle - Pavonia multiflora are designed to be visited and pollinated strictly by hummingbirds. The narrow, upright, barely opening tubular flowers present a display any hummingbird can truly appreciate. While our eyes simply see a dazzling combination of reds, violet, and blue, the super-vision of those tiniest of birds perceive several more colors in the infra-red and ultra-violet spectrum, visible only to them and certain insects! Sort-of like electric lights along Times Square flashing "HERE I AM"! ...

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Chestnut vine - perfect plant for home and office

by Onika Amell, tropical plant specialist

Q: I was visiting Ford Myers recently and attended the Edison Ford Winter Estate Garden Festival. I could not help but notice two stunningly beautiful Chestnut vines on your stand at the event. I have never seen this plant anywhere before. I was told they make a great indoor plant. I was also told your company ships to all 50 states. I have been looking for something unusual to grow in my office and this may be just the plant! How do I take care of it indoors?

A: If you want to bring a little bit of the tropics into your office, you have chosen the perfect plant. Tetrastigma voinierianum - Chestnut vine - is a long-lived perennial plant that will stay green all year long. It is a native of Laos and a member of the grape (Vitaceae) family. This is a truly striking vine with beautiful lush and large leaves. It is a vigorous climber with 8 inch or longer tendrils for climbing purposes. The underside of the leaves has clear pearl-like bumps, which are actually plant secretions that are used by ant colonies when growing in its wild habitat...

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Ghost Cold Protection

Q: Has anyone ever tried using heat packs under frost blankets to protect tropical plants from frost?

A: The reality is, the heat packs used for shipping do not have enough heat capacity to create efficient warming effect. From our own experience, the best way is to use small 25W incandescent bulbs which produce lots of heat (considering observing all safety precautions and fire safety). Some gardeners use Christmas lights. See picture of our plants in the ground during a cold night. We called them Ghost Cold Protection! ;)

See more columns on cold protection:
Seven rules of cold protection for tropicals
About Cold Protection
Cold protection - winter action for your plant collection
Tropical Treasures articles

The Florida Native Banyan

...The most impressive plant-life for me was a single native tree growing near a parking area along the Bay. It was the largest, oldest, "Shortleaf fig" I have ever seen. It was growing on a mass of bare exposed karst limestone and bore a small plaque describing it as being the largest Ficus citrifolia in the National Park. As it was dropping some of its little fruits at the time, I ended up taking a couple home for cultivation...

Flavor of Feijoa Superfood

Q: What exactly is Feijoa - Pineapple Guava? Does the fruit really taste like pineapple? I am curious to know if it is easy to grow.

A: Feijoa is certainly one of the easiest fruit trees to grow as it does not require much care. It is an attractive, evergreen tree or large shrub with dark green, oval, leathery leaves. It has an abundance of uses in the garden and produces lovely edible flowers and fruit! The fruit is eaten fresh, added to smoothies or fruit salad and is also commonly used to make delicious jams and wicked chutneys. Feijoa fruit go a long way in flavor.
This plant is drought tolerant and will grow in almost any soil type. It loves full sun or partial shade and is wind resistant. A lot of gardeners like to grow it as a wind barrier for this reason. It can easily be shaped into a dense, informal hedge or screen that needs very little pruning. Because of this density, it provides excellent shelter for all kinds of wildlife. Butterflies, birds, and butterflies will all love you for growing Feijoa!
Space the plant five feet apart to create a wind barrier hedge. Heat does no not bother it at all and it will also withstand temperatures to 10 degrees F.
The plant gets its names from the delicious perfume it emits. Some folks seem the fruit taste like pineapple, with a slight minty undertone. Others feel the flavor reminds them of juicy fruit gum! The texture is described as smooth and slightly gritty - almost like a pear, but firmer.
If you prefer to grow this plant as a tree rather than a large shrub, simply remove the lower branches up to one-third of the tree's height over a period of time. The Pineapple Guava can grow up to 15 feet wide and tall. They also do really well as a container plant on patios where you can truly enjoy the lovely fragrance of the fruit. It prefers rich, organic, well-drained soil and will need light fertilization every other month in most soils.

We recommend:

Fruit Festival Plant Food - Super Crop Booster
Mango-Food - Smart Release Fruit Tree Booster
SUNSHINE-Honey - Sugar booster
SUNSHINE C-Cibus - Crop Nutrition Booster

Pretty, pink, edible flowers will wow you from May to June, followed in late summer or fall by the delicious and fragrant fruit. An interesting thing about this fruit is that you don't pick it. It falls to the ground when it is ripe. Or simply place something under your tree, like a tarp, and shake the tree. The ripe fruit will fall off. You can store the fruit in your refrigerator for up to a week. And remember! The fruit of the Feijoa is not only a very rich source of soluble dietary fiber, but also an excellent source of Vitamin C, and very rich in antioxidants. They are also low in calories. Each fruit only holds 55 calories.