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The Nemophila menziesii is an annual herbaceous plant, native to North America, with a prostrate or ground cover that usually remains below 15-20 cm in height. The leaves are of this plant are light green, opposite, pentalobate, with the lower lobes larger than the upper ones.
In spring and summer the Nemophila produces a profusion of white or blue bell-shaped flowers. The variety with the name Nemphila spotted instead has white flowers with purple spots.
The Nemophila menziesii prefers sunny or partial shade positions; the plants belonging to this variety fear the torrid heat of July-August, so it is advisable to shade them in the hottest periods of the year, so that you can enjoy the splendid flowering throughout the summer. It is therefore advisable to place them in a bright area but where they are not directly hit by direct sunlight during the hottest hours.
With the arrival of cold most of the varieties belonging to this genus die, not bearing the temperatures that approach zero. The parviflora variety is a perennial species that can, however, bear intense cold without problems.
As for the water supply, it is good to water the Nemophila menziesii regularly, especially in the hottest periods of the year; it is advisable to let the soil dry between one watering and another, but without leaving the plant dry for too long and trying to maintain a certain soil moisture.
Every 10-15 days add some fertilizer for flowering plants to the irrigation water. At the time of sowing it is advisable to place mature manure or a land rich in nutrients in the ground to ensure the best development.
The Nemophila menziesii grows without problems in any land, even in common garden soil; for optimal development place the nemophile in loose, rich and well-drained soil. The ideal substrate for plants belonging to this genus is composed of peat, organic substances, bark and soil, so as to have a soft and drained soil.
when deciding to plant this variety, it is good to prepare a soil that contains a lot of humus or is mixed with organic fertilizer that will be very useful for the development of new seedlings.
The multiplication and propagation of these plants takes place by seed; sow in the spring, when all the danger of night frosts has passed, after having worked the soil well; keep the soil always damp until the seeds are completely germinated, then thin out the seedlings, leaving about 10-15 cm between one and the other.
The sowing must be carried out directly in the place where they are intended to cultivate these specimens, having the foresight to keep the soil moist to ensure the best development.
Nemophila menziesii: Pests and diseases
red spiders and aphids often ruin flowers and leaves. For this reason it is good to intervene before flowering with specific pesticide products, commonly available on the market, which will guarantee the correct protection of the specimens. If you do not want to use chemicals, you can prepare natural nettle-based or garlic-based compounds to spray on affected specimens to eliminate the problem.