The majority of the 200+ species occur in Africa in open scrub or woodlands, the rest are spread over Asia, Australia and America. It's a terrestrial genus with the occasional epiphyte and lithophyte. A very small minority has evolved to survive in harsh desert climates.

Extract from Growing rare plants: a practical handbook on propagating the threatened plants of southern Africa
Guy Upfold has tried a few ways of growing small grassland Eulophias. He claims that soil from the natural habitat doesn’t prevent the plants from rotting, as it doesn’t drain fast enough. The best results are obtained from a mixture consisting of half river sand, half fine composted bark (seedling mix) and polystyrene balls to make the soil mix lighter. Provided the plants are allowed to dry out between watering, they do well.
Furthermore, they need to be under a roof. He has found that the less Eulophia odontoglossa, E. leontoglossa, E. parviflora, E. foliosa, and E. clavicornis are disturbed when growing and the more pot-bound they become, the better. He has used only clay pots and has never even tried plastic. He has found that these plants are very sensitive to the fertiliser strength used for epiphytes, which seems to burn the leaf tips.
In an article that Graham Duncan of Kirstenbosch wrote in Veld & Flora in March 2000, he clearly describes how he maintains Eulophia horsfallii in cultivation. He grows Eulophia in deep trays and in pots. He uses a mix of coarse river sand and milled bark and finds that the plants seem to like it. He finds that some species multiply vegetatively quite well, but others don’t, and ultimately don’t live long in cultivation.
I believe that Eulophias are probably the most easily cultivated of all the southern African orchids, and generally most suitably grown in shallow containers in a very well-drained medium, consisting of equal parts of coarse river sand, milled bark and well-rotted compost. In my experience, the evergreen species are usually easier to grow than the deciduous ones, and evergreens, such as E. horsfallii, E. streptopetala, E. petersii, and E. speciosa can also be successfully grown in gardens under optimum conditions.
Terrestrial species need heavy watering every few days, as soon as the containers have properly dried out from the last application. Once winter arrives, watering and feeding should be tapered off and stopped completely.
Many species of terrestrial orchids live in woodlands where trees are deciduous. The leafless trees of winter woodlands allow more sunlight to penetrate during the dry season. Plants under cultivation can be placed in similar positions where they are exposed to higher light intensity. Plants can be re-potted a week or two before their dormancy is broken by watering. This is also an opportunity to divide clumps, because new growth of shoots or roots is not damaged.
Organic matter in the form of well-rotted compost or leaf litter is necessary for mulching. The leaves do not only help to smother weed seedlings, but act as a form of slow-release fertiliser as well. All orchids respond to regular applications of liquid fertiliser. Most growers use organic brands and the seaweed-based fertilisers. Commercial nurseries tend to use a combination of both inorganic fertilisers and the organic brands. Concentrations are important and I often err on the side of applying less fertiliser. In fact, I tend to dilute my fertiliser applications by half.

Eulophia species can generally be divided into 2 groups: the coastal species require higher temperatures and more water than the inland species.

http://links.jstor.org/sici?sici=1374-7886%282001%2971%3A2%3C585%3ASSGITK%3E2.0.CO%3B2-E&size=LARGE&origin=JSTOR-enlargePage

• Growing rare plants: a practical handbook on propagating the threatened plants of southern Africa
  
• Eulophia speciosa on plantzafrica.com
• Eulophia horsfallii on plantzafrica.com
• Cribb, P.J. 1989. Orchidaceae, part 3. In R.M. Polhill, Flora of tropical East Africa . Balkema, Rotterdam.
• Golding, J.S. (ed.). 2002. Southern African plant Red Data Lists . SABONET Report No. 14. National Botanical Institute, Pretoria.
• Hall, A.V. 1965. Studies of the South African species of Eulophia . Journal of South African Botany , suppl. 5.
• La Croix, I.F. & La Croix, E. 1997. African orchids in the wild and in cultivation . Timber Press, Portland, Oregon.
• La Croix, I.F. & Cribb, P.J. 1998. Orchidaceae. In G.V. Pope, Flora zambesiaca 11, 2. Flora Zambesiaca Managing Committee, London.
• Lawler, L.J. 1984. Ethnobotany of the Orchidaceae. In J. Arditti, Orchid biology: reviews and perspectives , III: 27-149. Cornell University Press, Ithaca and London.
• Linder, H.P. & Kurzweil, H. 1999. Orchids of southern Africa . Balkema, Rotterdam.
• Peter, C. 2003. Pollination in the genus Eulophia . Orchids South Africa 34: 88, 89.
• Pole Evans, I.B. 1925. Lissochilus speciosus . Flowering Plants of South Africa : t. 168.
• Stearn, W.T. 1992. Stearn's dictionary of plant names for gardeners . Cassels, London.
• Wodrich, K. 1997. Growing South African indigenous orchids . Balkema, Rotterdam.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Location
Eulophia bicallosa													Brisbane, Australia

Detailed data: Aggregated observation dates from the GBIF.org network.
A colored month means an observation in habitat or collection date of a herbarium specimen with flower or inflorescence. The number refers to the year of last observation or collection.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Location
Eulophia acutilabra										1986			Zambia
Eulophia adamanensis			1993										Thailand
Eulophia adenoglossa										1961			Angola
Eulophia alta										1938			Colombia
Eulophia alta											1960		Puerto Rico
Eulophia alta			1951						1951				Venezuela
Eulophia angolensis		1976											South Africa
Eulophia angolensis								1986					Tanzania
Eulophia angolensis				1982									Uganda
Eulophia angolensis			1977										Zimbabwe
Eulophia arenicola								1963					Angola
Eulophia aurantiaca										1986			Zambia
Eulophia clavicornis var. nutans			1977										Malawi
Eulophia clavicornis var. nutans		1977											Zimbabwe
Eulophia clavicornis var. inaequalis									1933				South Africa
Eulophia clavicornis	1976								1933	1976			South Africa
Eulophia coeloglossa									1986				Zambia
Eulophia coeloglossa											1976		Zimbabwe
Eulophia cristata		1988											Zaire
Eulophia cucullata						1986							Central African Republ
Eulophia cucullata										1976			South Africa
Eulophia cucullata										1986			Zambia
Eulophia cucullata											1976		Zimbabwe
Eulophia dabia				1983									Pakistan
Eulophia ensata										1976			South Africa
Eulophia euantha										1961	1962		Angola
Eulophia euglossa								1976					Congo
Eulophia explanata							1983						India
Eulophia flavopurpurea				1982									Uganda
Eulophia foliosa	1976	1976											South Africa
Eulophia foliosa		1977											Zimbabwe
Eulophia gonychila										1986			Zambia
Eulophia gonychila											1976		Zimbabwe
Eulophia graminea					1991								Hong Kong
Eulophia graminea		1989											Malaysia
Eulophia graminea									1975				Pakistan
Eulophia guineënsis		1988											Tanzania
Eulophia herbacea							1983						India
Eulophia hereroensis												1986	South Africa
Eulophia hereroënsis											1976		Zimbabwe
Eulophia latilabris			1986										Uganda
Eulophia leachii												1986	South Africa
Eulophia leontoglossa										1976			South Africa
Eulophia livingstoneana		1988											Zaire
Eulophia livingstoneana											1976		Zimbabwe
Eulophia longisepala										1963			Angola
Eulophia longisepala											1976		Zimbabwe
Eulophia macrantha		1977											Malawi
Eulophia malangana											1962		Angola
Eulophia mechowii											1986		Zimbabwe
Eulophia meleagris	1976												South Africa
Eulophia milnei										1986			Zambia
Eulophia mumbwaensis											1976		Zimbabwe
Eulophia norlindhii											1976		Zimbabwe
Eulophia odontoglossa											1962		Angola
Eulophia odontoglossa		1977											Malawi
Eulophia odontoglossa		1976								1976			South Africa
Eulophia odontoglossa	1988												Tanzania
Eulophia orthoplectra										1986			Zambia
Eulophia orthoplectra											1976		Zimbabwe
Eulophia ovalis	1989												South Africa
Eulophia ovalis subsp. bainesii		1976											South Africa
Eulophia parviflora										1976			South Africa
Eulophia petersii												1986	South Africa
Eulophia seleensis										1986			Zambia
Eulophia sp.									1962	1962	1957		Angola
Eulophia sp.					1970								Cameroon
Eulophia sp.				1987									Fiji
Eulophia speciosa										1976			South Africa
Eulophia speciosa											1976		Zimbabwe
Eulophia streptopetala	1981												Burundi
Eulophia streptopetala			1996										Congo
Eulophia streptopetala			1953									1947	Kenya
Eulophia streptopetala		1988											Rwanda
Eulophia streptopetala										1976			South Africa
Eulophia streptopetala			1988										Uganda
Eulophia streptopetala							1986						Zaire
Eulophia streptopetala											1976		Zimbabwe
Eulophia subsaprophytica											1976		Zimbabwe
Eulophia subulata		1948	1988	1982									Uganda
Eulophia tabularis												1937	South Africa
Eulophia thomsonii										1961			Angola
Eulophia tuberculata							1963						Angola
Eulophia walleri			1977										Malawi
Eulophia welwitschii											1962		Angola
Eulophia welwitschii										1976			South Africa
Eulophia welwitschii											1976		Zimbabwe
Eulophia zeyheriana	1989												South Africa

World Checklist for Eulophia. With the permission of the Trustees of the Royal Botanic Gardens, Kew Published on the Internet
Database integration using Royal Botanical Gardens Kew for reference
Hybrid  Not a Hybrid ... Click on the ---- to get more data