AGEH 29, Fall 2013 Shasta Arboretum

1. AGEH 29, Fall 2013Shasta Arboretum

2. Achilleamillefolium, yarrowsunflower family, Asteraceae

3. Achilleamillefolium, yarrowsunflower family, Asteraceae • Native to much of N. hemisphere • Hardy perennial, available in many colors • Flowers in flat-topped clusters of radiate heads • Leaves alternate, finely divided • Fruit an achene

4. Centaurea cinerariaDusty Miller

5. Centaurea cinerariaDusty Miller • Originates from the island of Capraia in Italy • Prefers full sun, can tolerate light shade • Very drought tolerant but can take regular irrigation

6. Senecio cinerariaDusty Miller

7. Senecio cinerariaDusty Miller • Native to Mediterranean and northwest Africa • Drought tolerant • Dense hairs on leaves are used by some species of bees for nest building • Tolerant of light shade but prefers full sun

8. CerastrumtomentosumSnow in Summer

9. CerastrumtomentosumSnow in Summer • Native to the alpine regions of Europe • Not long lived • Repair bare patches with divisions • Needs well drained soil • Spreads 2-3 feet in a year

10. Cocculuslaurifolius, laurel leaf snail seed (Menispermaceae) Seed image from Cocculuscarolinus, Carolina coralbead

11. Cocculus laurifolius, laurel leaf snail seed (Menispermaceae) Evergreen shrub or tree, native to Himalayas (almost viny) ID: multistemmed, with arching growth; branches long and flexible; lvs. shiny and leathery, to 6”; slow-growing at first, then quickly to 25 ft. Care: Sun or shade; moderate water

12. Feijoa (Acca) sellowiana, Pineapple guavamyrtle family, Myrtaceae

13. Feijoa (Acca) sellowiana, Pineapple guavamyrtle family, Myrtaceae • Evergreen shrub or tree, large and multistemmed, liking full sun and moderate water • 18-25 ft high and wide; leaves glossy green above, gray beneath • Flowers in spring, with pinkish, fleshy flowers (petals edible, taste like bubble gum); fruit 5 mos later, 1-4 in., bland; harvest as they begin to drop off; if fruit is your goal, buy named varieties (needs cross pollination) • Prune in late spring • Name change to Acca, not yet widely used

14. Helianthus maximilianii, Maximilian sunflowersunflower family, Asteraceae

15. Helianthus maximilianii, Maximilian sunflower • Tall rhizomatous perennial, spreading slowly to make large patch • Many radiate heads in fall • Narrow, alternate, rough leaves • Dies back to the ground in winter • Propagate by digging up a portion of roots • Cut back stems early to keep from flopping over

16. Ilex cornuta, Chinese holly

17. Ilex cornuta, Chinese holly, holly family, Aquifoliaceae Arborescent shrub, native to Asia. In general, hollies have sexes on separate plants, need both sexes to get fruit. But named varieties of this holly set fruit without a male plant! Chinese holly variable in leaf, generally have spines on 4 corners and one in middle (or looks like 3 at tip of leaf).

18. Ilex cornuta, Chinese holly, holly family, Aquifoliaceae Needs long warm season to set fruit. In desert grow on north sides of walls and buildings. Ours may be ‘Burford’. There is another called ‘Willowleaf’ without the leaf spikes

19. Iris germanica, bearded irisiris family, Iridaceae

20. Iris germanica, bearded iris • Perennial with branching rhizomes • Flower parts in threes; ovary inferior • Flat parallel veined alternate leaves in one plane, folded around the stem (“equitant”) • Fruit a three-chambered capsule The American Iris Society ‘How to Plant and Grow Bearded Iris’ http://www.irises.org/About_Irises/Cultural%20Information/Grow_Bearded.html

21. Lantana camaraLantana

22. LanatacamaraLantana • Native to tropical regions of Americas and Africa • Invasive in Asia, South Africa, Australia and Hawaii • Introduced bio control insects in Australia and Hawaii with mixed success

23. Lantana camaraLantana • Poisonous leaves and berries • Has led to widespread livestock loss in the United States, South Africa, India, Mexico and Australia • Good honey plants for a butterfly garden

24. Lavandulaangustifolia, English lavendermint family, Lamiaceae

25. LavadulaangustifoliaEnglish Lavender • Native to the Pyrenees Mountains in northern Spain • Thrives in full sun • Needs only moderate water

26. LavadulaangustifoliaEnglish Lavender • Sweet fragrance used in perfumes and sachets • Lavender oil used in massage therapy • Dried leaves used in herbal teas • Flowers and oils used to prevent clothing moths since they don’t like the scent

27. L. angustifolia English Lavender L. stoechas Spanish Lavender • As mint family members, have opposite leaves, square stems, bilabiate flowers • Flowers in terminal spikes • Both are evergreen shrubs with lavender fragrance • Native to the Mediterranean • Main difference is in the flower spikes—L. stoechas has thick spike with colored bracts on top; L. angustifolia has thin spike with no bracts on top.

28. Loropetalum chinense, Chinese fringe flower, Witchhazel family (Hamamelidaceae)

29. Loropetalumchinense, Chinese fringe flower, witchhazel f., Hamamelidaceae • Native to China and Japan • ID: 6-10 x 6-10 ft; evergreen or semievergreen shrub; lvs green or purple, 1-2 in.; flswhite or pink, petals ribbonlike • Care: sun to full shade; moderate to regular water; takes any amount of pruning • Value: flowers all year, but most in spring

30. Origanumlaevigatum ‘Hopley’s’Hopley’s Oregano

31. Origanumlaevigatum‘Hopley’s’Hopley’s Oregano • Native to rocky areas of Turkey and Cyprus • Needs well drained soils in full sun • Heat and drought tolerant • Foliage is aromatic • Dried leaves used in potpourris

32. Osmanthusheterophyllus, Holly-leaf Osmanthus; Olive family, Oleaceae

33. Osmanthusheterophyllus, Holly-leaf OsmanthusOlive family, Oleaceae • Flowers very fragrant; blooms in spring, summer, fall • Leaves resemble holly but are OPPOSITE; some spiny, some entire; selection is a male, so no fruits • Large shrub, to 30 x 15 ft • Good, tough, drought-tolerant, often maintained at 6 ft. • From Japan • Useful as a hedge

34. Rosmarinusofficinalis, rosemarymint family, Lamiaceae

35. Rosmarinusofficinalis, rosemary • As mint family member, has opposite leaves, square stems, bilabiate flowers • Flowers in axillary clusters • Evergreen shrub with strong fragrance, culinary use • Native to the Mediterranean • Many named cultivars, some erect, some trailing, different flower colors

36. Salvia greggii, autumn sageMint family, Lamiaceae

37. Salvia greggii, autumn sageMint family, Lamiaceae • Native to southern Texas and northern Mexico • Blooms throughout summer and fall • Drought tolerant but does best with moderate water • Replace plants every 5 years • Full sun or partial shade

38. Variable flower colordeep red to pinkish white

39. SantolinachamaecyparissusLavender Cotton

40. SantolinachamaecyparissusLavender Cotton • Native to Mediterranean • Hot sunny spot in well-drained soil • Prune in winter • Extracted oil used in perfumes • Branches repel insects in closets • Dried leaves suitable for pot pourri

41. SantolinapinnataRosemary Santolina

42. SantolinapinnataRosemary Santolina • Grow in full sun in well-drained soils • Easy care • Few pests • Fragrance used in pot pourri

43. Stachysbyzantina, Lamb’s ears, Mint family, Lamiaceae

44. Stachysbyzantina, Lamb’s ears, Mint family, Lamiaceae • Creeping groundcovers nearly “evergray” • May decompose in hard freezes, cut back and will quickly regrow • Flowers: love ‘em or cut ‘em off • Good for edging of beds

45. Non-flowering Lamb’s ears, ‘Silver Carpet’,‘Primrose Heron’, ‘Helen von Stein’

46. Trachelospermumjasminoides, star jasmine, dogbane family, Apocynaceae

47. Trachelospermumjasminoides, Star jasmine, Dogbane family, Apocynaceae Evergreen vine from China; milky juice can be skin irritant ID: twining vine 20-30 ft; or handle like a groundcover; leaves 3”, oval, glossy, opposite; flowers 1”, white, very fragrant Best foliage in shade, moderate water; flowers best with sun

48. Viburnum tinusLaurustinus

49. Viburnum tinusLaurustinus • Native to Mediterranean • Prefers shady moist areas • Blooms fall to spring • Dense foliage good for topiary shapes • Susceptible to mites and prone to mildew