![]() If you wish to try growing anchor plants from seed, sow in spring in containers or a prepared seed bed. Transplant when the cutting has a full root mass. ![]() Rooting can be very slow, up to 2 years, so be patient and keep the cutting lightly moist. Take non-flowering early side shoots in early fall and pot them up in a cold frame to over winter. A better way to propagate the species is through semi hardwood to hardwood cuttings. Any damage can be pruned off, but be careful of those spikes! The bush can also be trimmed to maintain size and keep stems dense.Ĭolletia produce some seed but it is difficult to germinate and growth is extremely slow. Once established, they need very little water and are deer tolerant.Ĭrucifixion thorn plants are winter hardy down to 20 degrees Fahrenheit (-6 C.) with some protection and a thick winter layer of mulch over the root zone. If you are lucky enough to find one, you will need some tips on how to grow Colletia.Īnchor plants are xeriscape flora which need well drained, gritty soil and full sun. There are very few collectors that have Colletia for sale or trade. Leaves are tiny and insignificant, appearing only on new growth. From these, almond scented, creamy ivory flowers appear at the stem joints from summer until fall. The stems are photosynthetic and called cladodes. These are grayish green and resemble an anchor or jet plant propeller, which leads to another common name, Jet Plane plant. ![]() It is a tropical to sub-tropical specimen that has flat, 2-inch (5 cm.) wide triangular stems tipped with spines. The plants are found from Uruguay, west to western Argentina and into southern Brazil.Ĭolletia anchor plant ( Colletia paradoxa) is a shrub that may grow up to 8 feet (2.4 m.) tall and wide. However, they are very rare plants and usually only found in botanical gardens where special cultural steps for successfully growing anchor plants can be taken to mimic their native range. Crucifixion thorn plants could provide just the right amount of drama and distinctive form. Gardeners are often searching for that unusual, second look plant for their landscape. What is Colletia plant? Read on for a description and growing details for this unique South American native. Also known as Crucifixion thorn plants, Colletia is a surprising specimen filled with danger and whimsy. ![]() For unmatched strangeness in the garden, you can’t go wrong with Colletia anchor plant. ![]()
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