Date: 10 Oct 2016
Cold protection - winter action for your plant collection
A note from our customer: Last winter was very cold here in Arizona, lower 30's. I used white synthetic sheets (called frost cloth, it is very light and yet effective) to cover my fruit trees, and kept simple light garlands on for the whole night. Sending you couple photos so you can share with others. It worked pretty well for my plants and no cold damage!
With winter approaching, it is time to take some actions to protect your rare plants from cold stress and damage.
If you live in a mild climate, you still need to get ready for the cold nights. When expecting a cold night, individual plants and trees can be wrapped with sheets, or blankets, to protect them from the wind chill. Christmas lights is a good idea for an additional warm up.
For large collections of tropical plants, temporary winter greenhouse doesn't have to be expensive. An easy-assembly mobile carport from a hardware store covered with a plastic or fabric will cost you $100-200. It can fit a hundred plants or more!
If you live in area with a hard freeze, Southern exposure windowsill will work for most of the compact tropicals providing proper care. Larger collections may also move into your garage for a few cold nights, or for longer periods if the garage has a bright light source.
Factors affecting tropical plant winter survival:
1. Duration of cold period. Tropical plants can't stand long periods of cold. A few days of even upper 30's may kill a tropical plant. A few hours of frost may cause leaf drop but the plant will recover.
2. Minimum temperature - of course, the warmer the better. But see 1) - if cold is not for too long, it may be OK.
3. Wind-chill can be more dangerous than low temperatures.
4. Exposure. Southern slopes get warm during daytime and stay warm longer.
5. Protection with a house, fence, larger trees - where a "pocket" of warm air forms and stays - is beneficial.
6. Humidity. A lake or a river nearby (especially ocean) will mild the micro-climate.
7. Individual species hardiness. Don't try to grow Orchid Tree outdoors in New York.
8. Plant maturity and health. A well-established plant with developed root system has more chances to survive cold. If a plant had a good change to develop during warm season (bright light, enough water, fertilizer), it will be more cold hardy. Healthy plant can withstand lower temperature, so proper nutrition is important, including micro-element applications. Large specimens, even ultra-tropical, may survive cooler winter than they normally do in their natural habitat. The Nature provided plants with better hardiness level than it is normally used. To boost plant immune system and improve cold tolerance even more, use SUNSHINE plant boosters. SUNSHINE-T
Date: 31 Aug 2016
Hardy avocados
Q: I intend to gift three avocados, at least one type A and one type B, to a friend who lives in an area where the temperature never goes below 25F. The idea is to give them a ripening season as long as possible. Which combinations do you suggest, and which are the A and B?
A: When talking about "A" type and "B" type in Avocados, it is referring to the flowers. An avocado will produce both male and female flowers on the same plant. "A" type means that the flowers are female in the morning and male at afternoon. "B" type means that the flowers are male in the morning and female in the afternoon. If you plant to start a commercial growth, then it's important to create a proper mix of both types. However, in hot and humid climate a single tree produces flowers of both types, so it is not necessary to have both A- and B- types planted together in backyard. Even a single tree produces enough fruits for home gardener.
It is also important to know that while there are more cold hardy avocados, it refers to a full grown established tree. They will still need protection from the cold until they are bigger and more established. One can not expect a small tree, which was planted in June, to survive the first winter. It'll take few years until the tree is "harden" enough.
Wurtz Avocado: Fruits from May to Sept.
Dwarf hybrid. It is very compact and slow growing, reaching only about 8-12 feet at maturity. Distinctive weeping growth habit. Suited for planters, containers, patios, greenhouse use. Great for dooryard or container growing. The tree can handle temperatures to 25(F) degrees. Production is good and it is a consistent bearer.
Day Avocado: Fruits July to Sept.
Day avocado is green, smooth skin and is shaped like a club. The fruit is of very good quality and has a nice buttery consistency. The slender tree is relatively cold tolerant and produces July through September.
Fuerte Avocado: Fruits Nov to June.
Relatively cold hardy variety. Green fruit, elongated,flavor excellent, buttery. Vigorous compact tree with decidedly alternate year bearing habit. Ripens November to June.
These three will provide you with fruit ripening during the whole warm season.
For the most cold hardy avocado varieties, see this info sheet
Date: 19 Aug 2016
Growing Mexican Flame Vine as an annual
Q: While down in Fort Myers a few years ago, I saw this plant - Senecio confusus
Date: 20 Jul 2016
Forget the gym and get to gardening?
Calories Burned Gardening
Fun workout? We never have enough time to go to the gym or do an exercise so it's good to know that just doing something that you love can give you a workout. We all know that when we are out in the garden it gives us a bit of exercise but we do not realize how much exactly. Working out in the yard is a healthy hobby for many reasons, the high number of calories burned gardening being one of them. When you do this kind of physical labor, you carry out a wide variety of movements that most definitely burn calories, and may even tone. The best part about it in terms of physical activity is that if you enjoy yard work at all, you aren't watching the clock or counting down the minutes until you are done (the way that many people do while they are on a treadmill). You can easily spend a whole afternoon or an entire day working without feeling as though you are putting yourself through a mentally grueling workout. Finding physical activities that you enjoy are key to maintaining a healthy weight throughout your lifetime, and this hobby is a perfect example of that scenario for many people.
Research says that three hours of gardening can have the same effect as an intense 1-hour gym session. The study was carried out with a group of 100 gardeners who were asked to monitor the amount of time spent doing a series of common gardening tasks over a four week period. Gardening tasks that were monitored included weeding, digging, mowing the lawn, hedge trimming, trimming shrubs and trees, raking, planting shrubs, and moving garden waste using a wheel barrow. Here are some facts and numbers:
- Just doing half an hour weeding can burn up to 150 calories and tasks that handle heavy electrical equipment such as hedge trimming will give you a good workout burning 400 calories per hour.
- Spending a day or five hours each week in the garden will burn up to around 700 calories
- Over a gardening season that works out at 18,772 calories per year, equivalent to running seven marathons
- The gardening hobby could help burn a million calories over a lifetime.
Calories burned with only 1 hour of:
340 cal - Chopping wood, splitting logs, gardening with heavy power tools, tilling a garden, chain saw. Mowing lawn, walk, hand mower. Shoveling by hand.
272 cal - Carrying, loading or stacking wood, loading/unloading or carrying lumber, digging, spading, filling garden, composting, laying crushed rock or sod. Clearing land, hauling branches, wheelbarrow chores.
238 cal - Operating blower, walking. Planting seedlings, shrubs, trees, trimming shrubs or trees, manual cutter. Weeding, cultivating garden.
224 cal - Raking lawn, sacking grass and leaves
136 cal - Picking fruit off trees, picking up yard, picking flowers or vegetables. Walking, gathering gardening tools.
102 cal - Walking, applying fertilizer or seeding a lawn
34 cal - Watering lawn or garden, standing or walking
Sources: DailyMail, CalorieLab, FitnessBlender
Date: 20 Apr 2016
5 secrets of propagation
How to propagate rare plants? It is exciting and fascinating process - to be a Creator of a rare plant collection. Sometimes when you have a rare plant, you baby it and wish you could have at least two of the kind, just in case you lose one to weather conditions or an accident... If you lose one, it hurts! Plant collectors know the feeling - it is always a good idea to propagate a few more of the rare kind. Here at Top Tropicals we know that feeling too, and we want you to keep your baby plants alive and thriving, multiply them, share with others, and make our planet better - one plant at a time! Know your different plants, and different ways of their propagation. Ready for the secrets revealed?
1. Seeds. The most popular way and in most cases the most reliable. Also, a seedling has a strong, vertical root system (cuttings or air layers have shallow roots). However growing from seed is the only sexual method of propagation (vs other methods - asexual, or cloning), which means, some varieties don't come true from seed. Similar to a baby born from two parents, blonde mother and brunette father, can have either light or dark hair... or even red, genetically provided by the great-grand father! The most important factors of success when growing from seed are - well-drained germination mix (check out our Seed Germination Mix #3), and a combination of perfect temperature (high temperature 80-90F induces germination, but some species like it cooler!) and mix moisture level (can't stay soggy).
2. Cuttings. In most cases, works great as long as you know the secret for this method: clean (sterile) soil mix (check out our Propagation Mix #2), warm temperatures and very high air humidity (not moist soil, but humid air!). Mist house works well (see picture) with periodically controlled foggers (5-20 sec of fog every 5 to 20 min during light time - depending on species, and temperature), but simple clear plastic bag over a pot or tray works as well! Large leaves should be trimmed in half, or more, to eliminate extra evaporation, and soil should be only slightly moist, not soggy. Remember to use rooting hormone that not only improves rooting but keeps away fungus problems. You are welcomed to visit mist house in our facility, we will be happy to share experience.
3. Air Layers. From our experience, key to success with this method is patience. Most air layers take a few months to set root. Keep sphagnum moss moist, and create air layers only during active growth season - Sprint through Summer. Use rooting hormone.
4. Grafting. This method requires the most skills and experience but is not as difficult as it sounds. Plants can be grafted withing the same genus (e.g. one Gardenia sp. on another Gardenia sp.). There are many grafting manuals on internet. Try once, and you will get addicted to grafting! In many cases it is the most effective method. Especially when seeds not available and cuttings don't work with the species, while grafting works much faster than air-layering. The main secret in grafting is using the right type of graft, which comes with experience. Another important thing is keeping grafting parts and tools clean/sterile. Treat/clean surfaces with anti-fungicides horticultural soap (Example: Abound anti-fungal, Green Shield soap) and use rooting hormone.
5. Root divisions. All gardeners know that some plants are best to propagate by rhizome/root divisions, like Gingers, Heliconias, or Iris. And not everyone knows that some fruiting and flowering trees don't mind to reproduce by root divisions. For example, Jujube - Ziziphus jujuba, and Strawberry tree - Muntingia calabura, readily produce root suckers. Watch out for them and don't let them go to waist when spraying weeds. All time favorites, fragrant Clerodendrums also like this easy method of reproduction, especially C. bungei, C. philippinum, and many others.
Check out our Growing supplies section for professional soil mixes and drainage components that are so important in your propagation success. At Top Tropicals, we often use Coconut Coir