【英语时差8,16】大波斯菊

 Coreopsis A stalwart perennial¹ in American gardens, the lanceleaf coreopsis is a native of the prairies of the Midwest. It is a plant with a sunny disposition². The daisy flowers have yellow petals³ that are toothed at the tips and bloom at the end of 18-inch long stems. If deadheaded regularly, many flowers are produced in cycles, throughout the summer. It makes a good cut flower. Coreopsis “lanceolata” has narrow well-shaped leaves and a height of 12-36 inches. The genus name, “coreopsis,” is from the Latin and means “bed bug” because the seeds are black, and they have a small hook on one end. A common name is tickseed, because the seeds have been likened to ticks. Our pioneers used the seeds to stuff mattresses⁴ and thought they repelled⁵ insects.

    There are also some called threadleaf coreopsis with finer needlelike foliage⁶. These are also easy to grow and deer don’t seem to like them. They tolerate dry locations in full sun and can be sheared⁷ back after blooming to encourage continued bloom. The pale lemon “moonbeam” blends well with other perennials⁸, such as blue veronica. The threadleaf variety “Zagreb” has darker yellow flowers and “rosea” has light pink flowers. If you are looking for a long blooming perennial which is trouble free, then coreopsis is the plant for you.

1 perennial   

adj.终年的；长久的

参考例句：

• I wonder at her perennial youthfulness.我对她青春常驻感到惊讶。
• There's a perennial shortage of teachers with science qualifications.有理科教学资格的老师一直都很短缺。

2 disposition   

n.性情，性格；意向，倾向；排列，部署

参考例句：

• He has made a good disposition of his property.他已对财产作了妥善处理。
• He has a cheerful disposition.他性情开朗。

3 petals   

n.花瓣( petal的名词复数 )

参考例句：

• white petals tinged with blue 略带蓝色的白花瓣
• The petals of many flowers expand in the sunshine. 许多花瓣在阳光下开放。 来自《现代英汉综合大词典》

4 mattresses   

褥垫，床垫( mattress的名词复数 )

参考例句：

• The straw mattresses are airing there. 草垫子正在那里晾着。
• The researchers tested more than 20 mattresses of various materials. 研究人员试验了二十多个不同材料的床垫。

5 repelled   

v.击退( repel的过去式和过去分词 )；使厌恶；排斥；推开

参考例句：

• They repelled the enemy. 他们击退了敌军。 来自《简明英汉词典》
• The minister tremulously, but decidedly, repelled the old man's arm. 而丁梅斯代尔牧师却哆里哆嗦地断然推开了那老人的胳臂。 来自英汉文学 - 红字

6 foliage   

n.叶子，树叶，簇叶

参考例句：

• The path was completely covered by the dense foliage.小路被树叶厚厚地盖了一层。
• Dark foliage clothes the hills.浓密的树叶覆盖着群山。

7 sheared   

v.剪羊毛( shear的过去式和过去分词 )；切断；剪切

参考例句：

• A jet plane sheared the blue sky. 一架喷气式飞机划破蓝空。 来自《现代英汉综合大词典》
• The pedal had sheared off at the pivot. 踏板在枢轴处断裂了。 来自辞典例句

8 perennials   

n.多年生植物( perennial的名词复数 )

参考例句：

• Name six perennials and six annuals suitable for indoor flower arrangement. 列出多年生及一年生花朵各六种，它们必须是适合插花的。 来自互联网
• Herbage can be divided into three categories: annuals, biennials, and perennials. 草本植物可分成一年生、二年生和多年生。 来自互联网