Yellow herbaceous flowers

This past week I've had several local people ask me about plants with yellow flowers. Midsummer is the time for questions about yellow flowered plants because this is when they are abundant. At least two of the yellow-flowered plants asked about are in the genus Potentilla. You may be familiar with at least one of these plants as in the last few years a shrub in this genus has become very popular as a garden plant, though it may be better known as Cinquefoil.

Cinquefoil refers to the idea that most of the species in the genus Potentilla have leaves composed of five leaflets, though some have seven or more and a couple have only three. The leaves are usually regularly toothed along the margins. All of the members of this genus have five petals that make up the flower and the flowers are usually yellow, though some are white or purple. This genus of plants is in the Rose family and the flowers might remind people of strawberries or raspberries.

As I mentioned, the shrub is probably the most familiar to people here. It is commonly called Shrubby Cinquefoil (Potentilla fruticosa). It is found in the wild at Lone Lake and is planted around many houses in town, including mine. The yellow flowers with five petals are about 3/4-inch wide with rounded petals. The leaves have five, sometimes seven lanceshaped leaflets, which are hairy on both sides. The leaves are alternately arranged along woody twigs and the shrubs are usually one to four feet in height.

Cream, white, and even pink flowered varieties have been developed.

One reason that this shrub has become so popular with people here on Mackinac is that they grow very easily and take little care. This is in part because the Shrubby Cinquefoil loves calcareous soils. In other words, it loves limestone and that is one thing that Mackinac has in abundance.

READERS DIGEST A-Z of perennials

No stinging nettles are

2009-06-12 06:10:31 by too_cute

Stinging nettles are a dioecious herbaceous perennial, growing to 1-2 m tall in the summer and dying down to the ground in winter. It has very distinctively yellow, widely spreading roots, rhizomes and stolons. The soft green leaves are 3-15 cm long and are borne oppositely on an erect wiry green stem. The leaves have a strongly serrated margin, a cordate base and an acuminate tip with a terminal leaf tooth longer than adjacent laterals. It bears small greenish or brownish 4-merous flowers in dense axillary inflorescences. The leaves and stems are very hairy with non-stinging hairs and also bear many stinging hairs (trichomes), whose tips come off when touched, transforming the hair into a needle that will inject several chemicals: acetylcholine, histamine, 5-HT or serotonin, and...

Your soil is probably fine

2004-06-11 10:25:13 by pro

Your soil probably doesn't need anything but watering and mulching. Exceptions: hard compacted soil (all the air spaces have been squashed out so water and air cannot penetrate therefore roots can't live), vegetable planting beds, annual ornamental beds that will be planted over and over.
First weed the area. If it's really weedy use the search function to find posts on sheet mulching. If you'll hand water for now skip ahead. Research for the future: Otherwise hire an irrigation contractor (look for specialists in yellow pages) to check and repair your system next

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DALY: Use care when planting around septic drainfields  —
Shallow rooted annual and perennial herbaceous plants can be planted closer to the drain fields since they do not have invasive roots. Turfgrass can be grown over the drain field and is beneficial since it helps hold the soil in place.

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