Crocus, Etruscus Zwanenburg
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CROCUS, Etruscus Zwanenburg
Crocus etruscus Zwanenburg, AKA the Tuscan Crocus, is deer resistant and an outstanding pollinator plant. The petals are pale violet with lilac-blue and deep violet-blue striations. Each blossom has a pale yellow throat. The plants can reach a height of 5 inches. The corms should be planted 6 inches deep and 3-4 inches apart.
Crocus etruscus Zwanenburg is hardy from Hardiness Zone 4 to Hardiness Zone 8. It is truly forgiving of poor, dry soil, but it loves rich, loose loam. It blooms early to mid season and shows best when planted in groups of 10-25 bulbs. HZ: 4-8 5” Early-Mid Season
Crocus, Etruscus Zwanenburg
Crocus is the Chaldean name given to the species by Theophrastus. Theophrastus (370-287 B.C.), a student of Aristotle, was a scholar, botanist, biologist, and physicist. His two major books constitute the first systemization of the botanical world and were major sources for botanical knowledge during antiquity and the Middle Ages. On the strength of these works some call him the “father of botany.” In Greek, the name means saffron. All of the vernus species are deer resistant.
Crocus are found naturally in much of Europe, especially the Mediterranean, in North Africa, and in western Asia as far east as Afghanistan. There are more than 80 species of crocus. Crocus olivieri ssp balansae Orange Monarch belongs to the species Olivieri balansae which is native to Turkey, Greece, the Aegean Islands, Yugoslavia, Romania and Bulgaria. This Crocus Species is deer resistant and produces multiple blossom stems, up to 12 per corm. Most balansae have striped petals. They are very early flowering, producing blossoms in the January-March timeframe.
Planting Bulbs in the Fall for Glorious Spring Color
Bulbs are some of the easiest plants to grow. Fundamentally the process requires four steps.
1. Dig a hole.
2. Dust the hole with bonemeal.
3. Place the bulb in the hole.
4. Fill the hole with soil.
There are, however, some additional refinements which help produce even more lavish results and enhance protection from critters.
First, bulbs can and should be planted deeper than the instructions you receive on the package labels. An easy way to remember how deep to plant the bulb is to think of a quarter. If the bulb you are planting has the same diameter as a quarter or less, plant the bulb 4 inches deep. If the bulb is broader than a quarter, plant it 6-10 inches deep. Large bulbs like some alliums, camassias, standard tulips and fritillaries can easily be planted 10 inches deep. As the soil compacts days, weeks and months after planting, it produces a thinner layer of soil on top of the bulb. Planting bulbs deep helps with critter control. Moles, voles, chipmunks and squirrels are lazy little creatures, and they don’t like doing a lot of digging to reach their food.
Second, bonemeal is a must. It is an excellent source of calcium and phosphorus which help the bulbs to form a strong root system and healthy stems. For large bulbs (those bigger than a quarter), use ¼ cup per bulb. For small bulbs, dust the entire surface or hole where the bulbs will reside.
Third, small bulbs should be planted in clusters of 10 or more – 1 inch apart. Large bulbs, like allium, can stand along, but create a much more pleasing presence in the garden when planted is clusters of 3-5. They should be separated by no more than 4-6 inches.
Fourth, bulbs usually multiply fairly quickly and once crowded will not produce blossoms. Plan to divide your bulbs in mid-summer to fall when the top growth has dried out.
These simple, easy, quick tasks are all that is required to produce a lovely bulb display year after year.
Planting Bulbs in Containers
If you live in Hardiness Zones 5 and higher all you need to do is mix some soil. Check out the soil mix described in detail in our Harvesting History YouTube video. Do not use prepared soil mixes.
The Best Soil Mix for Containers
Always plant bulbs more densely in containers than in the ground. Pots as small as 6-inches in diameter can have a showy presence on a deck, porch or patio. You can use much larger pots and plant several kinds of bulbs.
Fill the pot half full, dust the soil surface with bonemeal, arrange the bulbs on top of the bone meal and fill the pot with the rest of the soil. Dust the surface of the soil with more bonemeal. Water thoroughly, but do not let the pot stand in a saucer of water.
If you live in Hardiness Zones 1-4, you must protect the pots by bringing them into an unheated garage or surrounding them with bales of straw. If you do not do this, the bulbs usually freeze and turn to mush.