Girl Builds Pond, Part Two

Girl Builds Pond, Part One

Benefits vs. Arguments for Guerrilla Gardening

     Guerilla gardening is in full swing during the warmer months all across the United States. Likely a reaction to cooped-up urbanites retaliation against metropolitan space waste, guerrilla gardeners plant flowers and vegetables in areas that are otherwise laying fallow or abandoned.
     Some people aren't happy with guerrilla gardeners. Recently in Washington DC, the city removed hundreds of red, white, and blue flowering plants that had been placed by a guerrilla gardener on a sloping embankment, claiming that his climbing could lead to falling, which would incur liability for the taxpayers. They also claimed that there was no money in their budget for the upkeep of the plantings.
     Another recent article in the New York Times paints urban guerrilla gardeners in a negative light by supposing that a landscape of nothing but edibles will be a landscape without pollinators. This, of course, is untrue. I also emailed the author, Mariellé Anzelone, about her error concerning sassafrass. Her solution is not to avoid planting up the urban landscape, but to plant native wildflowers to promote diverse pollinators.

   "Urban activists should celebrate the indigenous wildflowers that sustain our pollinators beyond the short life span of fruit tree blossoms. In addition, we should incorporate native edibles into the planting palette. Blueberries, Juneberries and beach plums feed more species than just us humans."

     Anzelone and I agree on one thing, which is that native plants should be incorporated into any plan for regreening an urban zone. All too often city planners try to beautify by planting non-useful non-natives, like crepe myrtle and oleander. WE, the citizens, should be greening with natives and edibles like oak trees and others that were once found here in a time before pretty little homes.
     She neglects to point out that done properly, a neighborhood or area planted with nothing but edibles would still attract pollinators because the garden planners would want great diversity in their plantings. Anyone with a bit of gardening knowledge knows to plant more than one type of vegetable, or a time will come when you will be hungry. Does she think guerrilla gardeners are greening their cities with nothing but Irish potatoes, the nation's most popular vegetable? Or nothing but red delicious apples?
     As any permie can tell you, diversity in plantings is what promotes resistance to disease and pests. Planting a good deal of wildflowers will bring in butterflies and bees, but also bring in caterpillars and grasshoppers. You have to pick and choose your battles, and better to have a wide variety of edible or useful plantings than a lot of space wasted on toxics that attract plant-eaters. With the internet making distant knowledge available, and international shipping being how it is, there is no reason every abandoned easement can't be planted with useful edibles, or native edibles, or just native plants. Sweet potatoes from Japan, climbing beans from Germany, sugarcane from the Dominican Republic, the possibilities are endless. For some ideas for diverse edibles for Florida, check out my site and this site.
     For example, a maple tree might be useful in several ways, and is native. Native cottage roses are the same way. Both can be edible to humans and urban livestock and provide beauty. Roses attract pollinators. Maples provide shade and windbreaks, and can provide firewood. Almost any plant can be rated according to some simple points like these, and as long as plantings remain diverse, urban gardeners will do well with it.

     Eight Points for Identifying Useful Plants

     Edible to humans

     Edible to urban livestock

     Edible to urban wildlife

     Attract pollinators

     Provide beauty

     Provide shade and windbreaks

     Provide textiles or firewood for humans

     Provide habitat for urban animals

Bamboo

Native to: Asia.  Uses: Edible, Forage, Xeriscaping, Fencing, Fuel, Building Material, Clothing Textile.
     I love bamboo. It's got a very tropical, Asian feel to it, indeed, it is the definition plant for Japanese-style gardens. It grows very quickly thanks to it's unique rhizomial adaptations. It has a million and one uses. And rabbits love it.
     I think most people should understand before they plant bamboo that it is a giant grass. And think of how hard it is to get rid of grass in Florida once it is established! So extreme care should be taken before a planting of bamboo is placed anywhere. It should probably not be planted over sewer lines, electrical lines, water pipes, etc.
     My large bamboo is in a pot, while my dwarf bamboo hides underneath a palmetto bush. Hopefully that will be good enough to keep my yard safe.
     This pile of bamboo was laying by the curb at a neighbor's house. Silly people.

Covert Urban Homesteading, Part 2: Animals

   Without animals, your urban homestead is really just a super-nice garden. To really maximize your land use, you will want to get some small herbivores to convert your kitchen waste and yard refuse into instant fertilizer and protein. It should be noted that since you have a homestead here, and not an urban farm, you should be trying to provide as much of your animal feed as possible yourself. Buying feed is not what homesteaders do, it's what urbanites do, right?
     Every one of these animals will need their human caregivers to protect them from human and animal threats in addition to providing quality feed and water, and a clean living environment. Urban homesteaders here in Florida will have numerous pests such as weasels, hawks, cranes, cats, dogs, snakes, raccoons, teenagers, homeless, and the odd code enforcement official to contend with.

     Rabbits are by far my favorite outside animal. They can live on a completely home-grown diet of grasses and weeds, or planted vegetation. Larger operations will probably appreciate he convenience of pellet, which is not prohibitively expensive. The meat and manure are high quality, and extra stock can be sold as pets.

     Chickens are hilarious little birds. I've read that a combination of cat food and day-old bread, supplemented with egg shells, can be enough food for them, though I've never tried it.

     Quail need an extremely high protein diet as naturally they would eat nothing but insects. I've heard that they thrive in areas high in cockroaches, so...

     Guinea Pigs, also called cuys, are good eats in parts of South America. Think of them as slightly smaller rabbits.

     Mice/Hamsters. I'm considering raising them just for their cat and dog food value, since they will eat rabbit pellet and kitchen scraps and be fine with that. Maybe ground hamster could become the next big chicken or fish feed additive?

     Pigeons, especially homing pigeons, are popular outdoor pets in West Florida. I've heard that they can free-range and return home very well. They eat similar feed as chickens.

     Fish can be kept in aquariums as pets, raised for meat value, or raised for their plant fertilization value (think Aquaponics). Crawdads, catfish, and tilapia are all raised successfully here in Florida. Perhaps one of the most covert urban animal operations could involve a decorative "koi" pond filled with catfish or tilapia (Guess what I'm building in my back yard!).

     Bees live very well here in Florida, the main consideration being the location and disguise of your hive(s). After all, no one can complain you have bees if they can't see the hives. Most urban and suburban areas of Florida have decorative flowering plants and trees, that produce year-round blooms.

Happy Blogiversary, Chrissy

     Scrub Land has been up for one year now, it has earned over 22,000 hits. That's a lot of clicks.

Surprising Azolla Harvest

     The azolla in the newly built pond is finally growing up to the expectations claimed by numerous sources on the internet. Though the little pond is perhaps about 10 square feet of surface area, and even with the floating  planters, I was able to harvest a full pot of azolla last week and another pot of azolla today.
     I have been steaming to destroy bacteria (and  tadpoles) on the plants before draining and freezing into ice cube trays for ease of feeding to the rabbits. But it just brings up the good point, that if a person was starving, here is an extremely prolific food source for a survival garden.
     The only way to find the betta fish is by harvesting the azolla. It might not be a good idea to add this particular floating plant to decorative koi ponds. Now that my pond is up and running, I find myself wondering why not grow edible snails? They eat algae and won't disturb the floating planters, azolla, or fish.

Azolla, Azolla spp.

 Uses: Edible, Fodder, Fertilizer. Native to: The Cretaceous Period, worldwide.
     This floating water plant is actually a tiny, prehistoric fern with amazing properties. It fixes atmospheric nitrogen due to its symbiotic relationship with cyanobacteria, like an aquatic version of our more common legumes. Due to its nitrogen-fixation, it is also an extremely protein-rich plant, making it an excellent choice for home-grown fodder. In fact, there are very few land-based livestock animals that will not eat azolla, if any. Chickens, rabbits, goats, ducks, and cows are reported to gorge on this aquatic plant.
     Historically it has been used as a wetland green manure crop in the warmer parts of Asia. In the spring when taro or rice is planted in the boglands, the azolla would be innoculated to the water's surface. There the little ferns would fix nitrogen and proliferate, crowding out any competing algae or weeds via shading. Since the rice and taro have most of their foliage above water-level, it does not hinder their growth. The azolla will thrive, then self-mulch, then die down when the cooler weather comes. The farmers harvest some and shelter it for next year's use. The green manure properties of azolla make it possibly the six most valuable ferns on the planet.

A close-up of the roots which hang into the water.

     It's culture is simple - grow it in clean still or gentle water. Wind and water turbulence can fragment and destroy azolla, so sometimes floating beds are used. Like duckweed, under the right conditions it can become weedy if it escapes into waterways, so care should be taken to prevent escape. Since it provides it's own nitrogen, phosphorous can be a limiting factor to optimal growth. "The symptoms of phosphorous deficiency are red-coloured
fronds (due the presence of the pigment anthocyanin), decreased growth and curled
roots." A quick search of the webs reveals a superior organic source of high quality phosphorous can be made by burning animal bones at high temperatures to ashes. Never has a rocket mass heater in florida sounded more appealing!
     Azolla species can be used as a very nutritious survival food for humans, but it will need to be cooked to destroy any pathogens that might be living in the watery growing media. For animals, this compilated table shows it to have 16.5% crude protein and a bevy of other useful vitamins, like leucine and alanine. This Australian study lists many of the benefits of using azolla as a large-scale fodder source, but points out a simple drawback to commercial production - that contamination of the plantings by tiny freshwater shrimp can occur. This accidental animal protein renders the azolla illegal to sell as a feed source for ruminants in Australia, as they have strict legislation prohibiting animal proteins for ruminant consumption there. They also recommend the azolla be fed fresh or refrigerated, but within a week of harvest.
     A very nice synopsis of azolla research here.

Some free aquatic snail contamination.

I don't speak this language, but the video is very informative even muted.

The (Draft) Safe Plant List for Florida Rabbits

     There is a large conversation taking up bits of internet as more people worldwide work on safe, natural diets to feed rabbits. There is so much information out there, but most is for climates that have plants that do not grow well here in Central Florida.

     The nutritional makeup up a rabbit's complete diet is a large subject best explored here (Rabbit Nutrition: The Numbers). This is meant to be just a list of safe plants, along with a list of common but unsafe plants. Starred items I have personally fed my rabbits with no ill effects.

Grassy Types 

     Banana leaves*

     Rye*

     Bamboo*

     Yellow Nutsedge*

     Bahia*

     Plantain*

     Sunflower

     Sorghum*

     Pampas Grass*

     Fountain Grass

     Kenaf
Papyrus*

Legume Types

     Cowpea leaves*

     Peanut leaves and shells*

     Black Turtle bean leaves*

     Green runner bean leaves*

     Desmodium spp. leaves*

Herb Types

     Spanish Needle (Bidens alba, Bidens pilosa)*

     Soap Ginger*

     Cardamom Ginger

     Purslane*

     Sweet potato leaves*

     All Rosaceae family, including blackberry*, raspberry, pears*, and roses

     Sycamore*

     Maple*

     Hibiscus*

     Mulberry

     Citrus leaves*

     Persimmon leaves*

     Canna leaves*

     Squash spp.*

     Carrot leaves*

     Cilantro*

     Rosemary

     Basil

     Parsley*

     Lemongrass

     Oregano

     Sage

     Prickly Pear (spines removed)

     Pusley, Brazilian* and Floridian*

     Violet Woodsorrel*
Palmetto*
Spanish Dagger*
Cabbage*
Spiderwort*
Loquat*

Unsafe but common plants

     Crinum

     Century plant

     All Prunus species including Cherry Laurel (fruit may be safe, pits are not)

     Chinaberry Tree

     4 O'Clocks

     Taro, Dasheen, Elephant Ear

     Caladium

     Amaryllis

     Gladiolus

     White Potato Greens

     Oleander

     Tomato plants

     Crape Myrtle

     Lantana

     Privet

     Frangipani

     Rhoeo spathacea Steam (syn. R. discolor Hance)

     Oyster plant

     Moses-in-a-Boat (Purple Heart)

     Rain lily
Asthma Weed, Spurge

Unknown Toxicity Status

     Heliconia

     Ixora
Oak trees and acorns

     Hydrangea

     Ferns

     Bromeliads

     Cabbage Palm

     Crepe Myrtle

     Fig

     Pine needles

     Stargazer or Daylily

     Kiwi

     Muscadine grape

     Orange Honeysuckle

     Mexican Creeper

     Passionflower

     Magnolia

     Allamanda

     Confederate Jasmine

     Wisteria

     Dog Fennel

     Liriope

     Peace Lily

     Periwinkle

     Mexican Petunia

     Air Potato, Diascorea spp.

     Mimosa

     Acacia spp.

     Begonia spp.

     Cypress spp.

     Pecan leaves

     Prickly sida, Sida spinosa
Monkey Ear Tree leaves

     Here is a quick list of some rabbit-safe forages from Hawaii. It may give some ideas to those who live in South Florida.

Kiawe (mesquite) 

Mulberry 

Plantain (the small green lawn weed type as well as the banana types of plantain)

Sweet potato vines

Sunflower - seeds, leaves and stems 

Grape vines and leaves 

Rosemary (it is said rosemary will make their wool lustrous, however they won't always eat it.) 

Basil 

Lemon balm 

Daikon 

Banana - leaves, skins, fruit and trunk

Corn - husks, leaves and stems - not too much of the grain, though.

Roses - leaves, flowers and stems 

Beet greens  - not too much of the root, but you are supposed to eat that yourself.

Pigeon Pea - leaves and pods

Russian olive - although they may not like the taste

Ti leaves

Guinea grass - although they prefer the young leaves to the old stickery ones.

Dandelions

Carrots, especially the green tops

Nasturiums

Parsley

Alfalfa

Clover

   
Rabbits turn weeds into fertilizer, just think of the possibilities...

Chinese Tallow Tree, Triadica sebifera

Uses : Medicinal, Xeriscaping. Native to : Asia.

     The Chinese Tallow tree was introduced to the United States during the 1700's, and since then it has made itself at home throughout the southeast coastal states. It is now considered an invasive species by the state of Florida and is illegal to propagate and transport. In some areas the trees are notoriously difficult to remove, being known to successfully re-sprout from stumps and forgotten seeds. It grows very well on lands that are unsuitable for row agriculture, like, oh, most of Florida. It has naturalized itself in some areas, displacing native plants and animal habitats.
     It was originally introduced for commercial production of natural vegetable oil from the white seed coats, but industry never really took off. Perhaps it is too difficult to remove the seed coats from the fruit. An easy to grow natural vegetable oil would be a great crop for the South if it were viable. Popcorn trees are largely unaffected by pests. It attracts bees and butterflies. Birds and squirrels eat the fruits, reluctantly, if there isn't anything tastier to be found.
     I think the seeds would have a good use in starting campfires as a kindling, if you are a fan of cooking or relaxing with a campfire. Being naturally high in oil, they should work quite well for that purpose. It also will prevent the tree from reseeding all over your yard.
     The leaves change a range of beautiful oranges and reds in the fall, which is one  of the reasons it formerly was planted nationwide as an ornamental. This quality and it's fast-growing nature would make it an excellent specimen for a bonsai practitioner, being mindful that it is illegal to propagate. Then again in Florida gardening is only illegal when it bothers someone else... so a well-maintained bonsai (with prompt fruit removal) from is unlikely to cause trees sprouting in the neighborhood.
     The milky white sap of the tree is toxic, like all other plants with milky saps. Please be careful when handling parts of Popcorn tree, and avoid sap to skin or eyes contamination.
     The seedling problem is largely overstated here in West Florida where we have very distinct dry and wet seasons. There are maybe 10 to 30 Tallow trees here in this town, and they all appear to be about the same age, which leads to the idea that perhaps they all came from one nursery about 25 years ago. There are no seedling trees here to be found, possibly a side effect of frequent urban mowing.