Wednesday, August 20, 2014

'Tuscarora' Crapemyrtle: Featured Plant of The Day



Lagerstroemia x 'Tuscarora' 
Crapemyrtle

Type    Tree, woody plant
Hardy range    7A to 9A
Height    15' to 25' / 4.60m to 7.60m
Spread    12' to 20' / 3.60m to 6.00m
Growth rate    Fast
Form    Vase shaped
Exposure    Full sun
Persistence    Deciduous

Bloom Color    Pink and salmon
Bloom Time    Spring through Fall

The flowers are very showy.

Environment
This plant tolerates some drought and a little salt.
This plant will grow in dry soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to alkaline (less than 6.8 to more than 7.7) soil.

Leaf Color    Green
Fall Color    Orange and red

This plant has attractive fall colors.

Landscape Uses
-    Border
-    Street tree
-    Pollarding
-    Standard
-    Specimen

Attributes and Features
-    Pest tolerant
-    Persistent fruit
-    Attractive fruit

Culture Notes
'Tuscarora' grows best in full sun with rich, moist soil but will tolerate less hospitable positions in the landscape just as well, once it becomes established. However, plants left on their own in highway medians appear to be less vigorous unless ample mulch is applied out to the drip line. It grows well in limited soil spaces in urban areas such as along boulevards, in parking lots, and in small pavement cutouts if provided with some irrigation until well established.  They tolerate clay and alkaline soil well. Note the light-brown bark on this cultivar. This plant is considered mostly allergy free and causes little or no allergy problems in most people. Appears less cold hardy than other cultivars.

Many crapemyrtles are magnets for a host-specific aphid that only infests crapemyrtle, not other plants. The damage this causes is not lethal to crapemyrtle. Many beneficial insects which feed on pests that damage other landscape plants use this aphid for food. In this way, the crapemyrtle aphid serves as prey for beneficial insects. Therefore, planting crapemyrtle that attract aphids can enhance biological control of insect pests on other plants in the landscape.

Maintain adequate mulch area


Clear all turf away from beneath the branches and mulch to the drip line, especially on young trees, to reduce competition with turf and weeds. This will allow roots to become well established and keep plants healthier. Prune the tree so trunks and branches will not rub each other.  Remove some secondary branches on main branches with included bark.  This reduces the likelihood of the main branch splitting from the tree later when it has grown to become an important part of the landscape.  Locate the tree properly, taking into account the ultimate size, since the tree looks best if it is not pruned to control size. The tree can enhance any landscape with its delightful spring flush of foliage. It can be the centerpiece of your landscape if properly located.

Tree establishment specifications

Choose good quality trees for planting. The most common cause of young tree failure is planting too deep.  In most instances, the point where the top-most root in the root ball originates from the trunk (referred to as the root flare zone or root collar) should be located just above the soil surface.  You may have to dig into the root ball to find the root flare. If there is nursery soil over this area, scrape it off. Never place ANY soil over the root ball. The planting hole should be at least twice the width of the root ball, preferably wider because roots grow best in loose soil.  In all but exceptional circumstances where the soil is very poor, extensive research clearly shows that there is no need to incorporate any amendments into the backfill soil. Simply use the loosened soil that came out of the planting hole. Simply planting with the topmost portion of the root ball slightly higher than the surrounding soil might still install the tree too deep - be sure to locate the root flare.

Weed suppression during establishment is essential.  Apply a 3-inch thick layer of mulch to at least a six-foot diameter circle around the tree. This area should be at least two feet in diameter for each inch of tree trunk diameter and maintained during the establishment period.  Apply a thinner layer of mulch directly over the root ball but keep it at least 10 inches from the trunk. This allows rainwater, irrigation and air to easily enter the root ball and keeps the trunk dry.  Placing mulch against the trunk and applying too thick a layer above the root ball can kill the plant by oxygen starvation, death of bark, stem and root diseases, prevention of hardening off for winter, vole and other rodent damage to the trunk, keeping soil too wet, or repelling water.

Regular irrigation after planting encourages rapid root growth that is essential for tree establishment.  Trees provided with regular irrigation through the first growing season after transplanting require about 3 months (hardiness zones 9-11), 6 months (hardiness zones 7-8), or one year or more (hardiness zones 2-6) per inch of trunk diameter to fully establish roots in the landscape soil. Trees in desert climates may take longer to establish.  Trees that are under-irrigated during this establishment period (and most trees are) often require additional time to establish because roots grow more slowly.   Be prepared to irrigate through the entire establishment period, especially during periods of drought.

Irrigation also helps maintain and encourage the desirable dominant leader in the tree canopy on large-maturing trees.  Instead of a dominant leader, trees that are under-irrigated during the establishment period often develop undesirable, low, co-dominant stems and double leaders that can split from the tree later.

Unlike established plants, which do best with deep, infrequent irrigation, research clearly shows that recently transplanted trees and shrubs establish quickest with light, frequent irrigation.  For trees planted in spring or summer, provide one (cooler hardiness zones) to three irrigations (warmer hardiness zones) each week during the first few months after planting.  Daily irrigation in the warmest hardiness zones provides the quickest establishment.  Following the initial few months of frequent irrigation, provide weekly irrigation until plants are fully established.  With every irrigation, apply one (cool climates) to two (warm climates) gallons of water per inch trunk diameter (e.g. 2 to 4 gallons for a 2-inch tree) over the root ball only.  In most landscapes that receive more than 30 inches of rain or irrigation annually, if the mulch area is maintained weed-free, irrigation does not need to be applied outside of the root ball.  Never add water if the root ball is saturated.

In cooler hardiness zones, in all but the driest years, irrigation of spring- and summer-planted trees usually can be discontinued once fall color has begun. Irrigation of fall planted trees, however, should be continued until foliage has dropped from the deciduous trees in the region.  In warmer climates, irrigate fall-and winter-planted trees as described for the spring- and summer-planted trees.

In drier, desert climates there is benefit to be gained from applying additional irrigation outside of the root ball area. This is best done by making a large diameter berm four to six inches high, then filling it with water so it percolates into the soil.  For the first two years, irrigate twice each week through the spring, once per week in summer provided monsoons arrive, and twice each week again in fall if it remains warm.  Taper off watering to once or twice each month in winter and resume twice weekly next spring.  For years three to five, water twice per month in spring, summer, and fall and once or twice per month in winter.  During years five through seven, water once every three weeks in warm weather and once every six weeks in winter.  After this, the drought-tolerant desert trees should be able to survive on natural rainfall.

Trees with good, strong structure need no pruning at planting, except to remove broken twigs.  Do not remove branches to compensate for root loss - research has shown that this can be detrimental to establishment.


Tuesday, August 19, 2014

'Autumn Forest' Coneflower: Featured Plant of The Day

Rudbeckia hirta 'Autumn Forest' 
syn. Rudbeckia flava
Black-eyed Susan, Coneflower, Gloriosa Daisy


Type Biennial, perennial

Hardy range 4A to 8A

Height 18" to 36" / 45cm to 90cm

Spread 24" to 30" / 60cm to 75cm

Growth rate Fast

Form Rounded and upright or erect

Exposure Partial shade or partial sun to full sun

Bloom Color Orange, red and yellow

Bloom Time Summer and Fall


Environment
This plant tolerates salt well. This plant will grow in dry soil. Suitable soil is well-drained/loamy or sandy. The pH preference is a neutral soil.


Leaf Color Green

The flowers are showy and suitable for cut flowers.


Culture Notes
This plant is a short-lived perennial or biennial and is often grown as an annual. It self-sows easily, and cuttings can be taken in late summer and rooted in the cold frame. This plant prefers a sunny spot, with a well-drained fertile soil. Plants serve as butterfly nectar sources.


Monday, August 18, 2014

'Ruby Glow' Egyptian Star Flower: Featured Plant of The Day

Pentas lanceolata 'Ruby Glow'
Star Cluster, Egyptian Star Flower, Pentas, Egyptian Star Cluster

Type Perennial
Hardy range 8B to 11
Height 24" to 4' / 60cm to 1.20m
Spread 12" to 36" / 30cm to 90cm
Growth rate Fast
Form Rounded
Exposure Partial shade or partial sun to full sun
Persistence Evergreen and semi-evergreen

Bloom Color Red
Bloom Time Spring through Fall
The flowers are showy

Environment This plant tolerates some drought and a little salt.
This plant will grow in moist soil.
Suitable soil is well-drained/loamy, sandy or clay.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.

Leaf Color Green
This plant has attractive foliage.

Culture Notes Tolerant of a wide-range of soil types, Pentas prefers fertile, well-drained soils, regular moisture, and will grow quickly in full sun or light shade. Plants will flower fairly well with as little as 2 to 3 hours of sun each day. Plants can be dug, cut back, and stored in a container of soil over the winter in climates that receive freezing temperatures. Water occasionally to keep roots from drying out and replant and fertilize in the spring. Heavy mulch applied over the crown of plants cut back to the ground will help plants survive winter in hardiness zone 8. In most years, plants regrow from the partially buried stems in the spring. Plants can be clipped as a hedge but flower production will suffer. They are best left unclipped so flowers are free to develop on new growth. Plants serve as butterfly nectar sources.

Please feel free to comment on any post at any time. All feedback is welcome and we’d love to receive all of your thoughts.

Thank You

Thursday, August 7, 2014

Japanese Primrose: Featured Plant of The Day


Primula japonica 
Japanese Primrose,  Candelabra Primrose


Type    Perennial
Hardy range    3A to 8B
Height    12" to 18" / 30cm to 45cm
Spread    12" to 18" / 30cm to 45cm
Growth rate    Average
Form    Rounded
Exposure    Partial shade or partial sun
Persistence    Deciduous

Bloom Color    Pink, purple, red and white
Bloom Time    Summer

The flowers are fragrant and suitable for cut flowers.

Environment
This plant tolerates occasional wetness.
This plant will grow in moist to wet soil.
Suitable soil is well-drained/loamy.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.

Leaf Color    Green

Landscape Uses
-    Container plantings
-    Rock garden
-    Woodland garden
-    Border
-    Specimen
-    Groundcover

Attributes and Features
-    Naturalizing
-    Grows submerged

Culture Notes
Reseeds easily.  Seeds can be collected in the summer and sown under glass in the early spring.  Division of the clump can be done once dormant.  Does well if planted alongside stream banks or pond margins.  This plant will even grow in water.  Likes boggy ground locations.  Japanese Primroses are among the easiest to grow, featuring wrinkled foliage and brilliantly colored flowers.

Most Primula species resent hot, humid weather and boggy conditions.  Contact with the hairs on its foliage may irritate the skin.  Do not mist foliage, as its hairs can trap water and result in unnecessary rotting and/or gray mold (botrytis).

Wednesday, August 6, 2014

Sapphire Flower: Featured Plant of The day

Browallia speciosa 'Major'
Bush Violet,  Sapphire Flower


Type    Annual
Height    30" to 39" / 75cm to 100cm
Growth rate    Slow
Form    Irregular or sprawling and spreading or horizontal
Exposure    Full shade to partial sun

Bloom Color    Purple
Bloom Time    Year 'round

The flowers are showy.

Environment
This plant will grow in moist soil.
Suitable soil is well-drained/loamy or sandy.
The pH preference is an acidic to neutral (less than 6.8 to 7.2) soil.

Leaf Color    Green

Landscape Uses
-    Container plantings
-    Border
-    Massing
-    Specimen

Attributes and Features
-    Extended bloom season

Culture Notes
These plants are grown for their abundance of trumpet-shaped, attractive flowers.  There is a white flowered cultivar of this species also.

Monday, August 4, 2014

'Marshal's Delight' Bee Balm: Featured Plant of The Day

Monarda didyma 'Marshal's Delight'  syn. Monarda coccinea
    Bee Balm,  Bergamot,  Horsemint,  Oswego Tea


Type    Perennial
Hardy range    4A to 9A
Height    36" to 4' / 90cm to 1.20m
Spread    24" to 36" / 60cm to 90cm
Growth rate    Fast
Form    Upright or erect
Exposure    Partial shade or partial sun to full sun

Bloom Color    Pink
Bloom Time    Summer

The flowers are showy, suitable for cut flowers and suitable for dried flowers.

Environment
This plant tolerates occasional wetness.
This plant will grow in moist soil.
Suitable soil is well-drained/loamy.
The pH preference is  a neutral soil.

Leaf Color    Green
This plant has fragrant foliage.

Landscape Uses
-    Border
-    Massing

Attributes and Features
-    Naturalizing
-    Attracts birds
-    Attracts butterflies

Culture Notes
As one might guess from the name, Bee Balm attracts both bees and hummingbirds.  Its fragrant leaves are used to make tea and in potpourri mixtures.  It has a tendency to become invasive, so division is necessary every few years.  In the spring, remove dead foliage only.  Deadhead spent flowers after blooming and, in the fall, cut back to 6".    The flower heads of 'Marshal's Delight' are tighter than most in the species, and it appears to be mildew resistant.  Plants serve as butterfly nectar sources.