In 1827, a London physician with an interest in caterpillar metamorphosis built small glass boxes to contain the cocoons and emerging butterflies. Peering into the "dirt" in one of the boxes one day, the physician, Dr. Nathanial Ward, noticed that a fern spore had germinated.
Ward became enthralled with the way the plant was able to flourish without care in the box that he changed his course of study. In 1836, he published a book titled On the Growth of Plants in Closely Glazed Cases.
Wardian cases, as the glass boxes came to be called, became all the rage in Victorian England. Plants were protected from chilling drafts, dry air and gas fumes of Victorian houses.
Plant explorers also found a use for Wardian cases. Live plants from exotic lands could be transported by ship to England, protected in the cases from salt air and climatic conditions.
Today, we usually call such plant cases "terrariums."
CARE-FREE GARDENING
Whether in the home or on a ship, plants in Wardian cases need little care. The small amount of water that the leaves give off in their humid environment condenses on the glass and dribbles back to the roots. Oxygen released each day from photosynthesis is used each night in respiration. Ward reputedly grew ferns in one of his cases for 15 years without any care.
A Wardian case full of lush green plants is a year-round oasis, even if today's houses are less drafty than in the houses of the Victorian era.
Aside from decorative value and ease of care, a terrarium provides the humid, boggy environment essential to the cultivation of certain plants.
OPTIONS FOR A WARDIAN CASE
Many kinds of containers can serve as Wardian cases. I have made my own, using glass and silicone glue. Other possibilities include 5-gallon water jars, 1-gallon canning jars and aquariums.
Large plastic soda bottles are easily converted into small terrariums. Some bottles have a dark plastic piece that covers the domed bottom. Pry that plastic piece off the bottom and then cut the bottle in half crosswise. Invert the dome over the base you initially pried off, and you're almost ready to plant.
SOIL, PLANTS, WATER
To plant, start with a layer of charcoal, which will keep the soil "sweet." Next, add potting soil, the amount depending on the container, the plants and the type of "landscaping" you want. Perhaps, depending on your "landscape," one or more rocks also. Finally ... the plants. Dexterity with chopsticks helps in planting.
Choose plants that thrive in high humidity and will not grow too quickly.Good plant choices for larger terrariums are dracenas, diffenbachias and palms. Low-growing plants include English ivy (choose small-leaved cultivars), prayer plants, ferns, baby's tears and mosses.
The climate within a closed container allows cultivation of insectivorous plants such as the Venus fly trap, pitcher plant, and sundew, all of which need moist, boggy soils and very humid air. (And perhaps a fly every now and then.)
The final step, watering, is the most critical. Add water gradually so as not to form puddles in the soil. Add enough water to moisten the soil without making it sodden. Then set the terrarium in its permanent location, in bright light but out of direct sun, and watch for condensation. If the right amount of water has been added, there should be slight condensation on the glass each morning. If you have overwatered, let the case dry out for a few days with the lid off.
HomeStyle on 02/10/2018