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New Zealand White Clover an Orchard Cover Crop

New Zealand White Clover (Trifolium repens) is a perennial nitrogen fixing legume that reaches about 8-12 inches in height.  New Zealand White Clover is more tolerant of heat and drought than larger clovers, is more vigorous, and tolerates a wide range of soils.


New Zealand White Clover forms a symbiotic relationship with nitrogen fixing soil bacteria called Rhizobium trifolii. Rhizobium bacteria are found in root nodules of clover and other legumes. The Rhizobium bacteria fix atmospheric nitrogen into ammonium that the plant uses for growth and development. The plant in turn provides a suitable growth environment (root nodule) as well as other nutrients such as carbohydrates and protein.
 
New Zealand White Clover is used as green manure as it fixes up to 170 pounds of nitrogen per acre. Excess nitrogen is released into the surrounding soil where associated plants use it for growth and development. Local Orchards, Valencia County Extension Service, and Homeowners use New Zealand White Clover under their orchards or vineyards to provide natural organic nitrogen and eliminate the need to buy inorganic nitrogen fertilizers (photo).


New Zealand White Clover is also used as “living mulch”. Like other mulches a surface crop of New Zealand White Clover protects the soil from drying, high temperatures, chokes out weeds, and the flowers attract beneficial insects like honeybees (photo).

Reminder also, that a field of clover is just enjoyable to view, smell, and search through for lucky 4-leaf variations.

New Zealand White Clover will grow on most soils but requires regular moisture for growth. This is one reason it is well suited as an orchard or vineyard cover crop because fruit crops require regular moisture for production. Leave clover un-mowed in late summer or early fall so that this added bulk can act as an insulator through the winter months.

Trees That Please Nursery has both White Clover and New Zealand White Clover available for planting as an orchard cover crop.  Contact the nursery for more information and pricing.

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