Gardendelightsnursery’s Blog
Just another WordPress.com weblogother hydrangeas for the garden
Besides the well known Hydrangea macrophylla and its many varieites, there are other wonderful species for the garden. Among these are some favorites: H. arborescens, H. paniculata, H. quercifolia, H. serrata. H. arborescens is a soft leafed species with wonderful rounded heads of flowers usually in white. Grandiflora, Annabell, Hayes Starburst, and the new Incrediball, Invincibelle spirit (which is a repeating pink mop head type) are among the selections to be found.
In H. paniculata the clusters are pointed, conical and top long stems. This makes a large shrub and can be planted in full sun. Think of it as a lilac sized shrub, in bloom from summer to fall/winter. Most are white cvs, but there are chartreuse (Limelight, and a new dwarfer version, and pinks like Pinky Winky and Quickfire. They are sweetly and lightly fragrant when young and just opening. Later the clusters age to papery bronzes and make good dry material.
H. quercifolia is the oakleaf hydrangea and is a large bold textured plant. Wider than tall usually, it can grow to 8-10 ft wide if left untrimmed. Here the clusters are long and sometimes archng, they can also be pendulous and weight the branches down. Alice, Snowflake, Harmony(a dbl), Snow Queen are just a few of what is available.
H. serrata is like a smaller sized H. macrophylla. I like it better for small gardens and containers. Similar color range and lace cap or mophead clusters all smaller sized and on a smaller plant to perhaps 4 ft tall and wide.
A climbing hydrangea is H. anomala petiolaris and this can also come in variegated leaf form. Lacecap flower clusters and neat heart shaped foliage on stems that closely attach to their support is what you get in this clinging vine.
A relative, Schizophragma, is similar in all but small details but the sterile flowers in the lacecap clusters are more heartshaped and a bit larger. Several species are possible to locate.
As with all hydrangeas, they like an abundance of water and hymousy soil that is well drained. Part shade suits them best, but H. arborescens, H. paniculata and H. quercifolia can take a good amount of sun if well watered.
‘How to’ check drainage
New gardeners are often perplexed about the enormity of gardening. There is much to it, lots to learn, things to try and adapt to your specific needs.
Drainage is very important to plant health. Here is a tip for checking and understanding drainage. First dig a hole, perhaps a foot deep and as wide. Fill it with water and then see how long it takes to drain away into the soil. If it drains fast (under 1/2 hour, then you have good drainage. If it takes a whole day and it is the dry season, then you have poor drainage. Don’t be discouraged if you have poor drainage. You can get by with planting things very high on a mound/berm so plant roots will not drown. Plants need air in the soil structure besides water. When you water, you fill most of those air spaces with water, then water percolates down into lower soil levels and air returns to those spaces. Spaces in soil are very small. Type of soil is also related to drainage. Sandy soils will tend to drain fast, while silt and loam drain slower, and clay, adobe drain very slowly. If you are located on a slope, then this all changes since the natural incline precipitates better drainage!
To improve soil structure (and drainage), you can add soil amendments such as fir bark compost, etc.
Drainage is important to plants since the roots need air to breathe and stay alive, so if they drown in winter rains, or with heavy watering, there is nothing alive to support the top growth and the plant dies. Some plants are very sensitive to drainage. Things like cherries, peaches & nectsarines, apricots, rhododendrons & azaleas, camellias, etc. are all particular about drainage. It needs to be very good for optimum growth and performance of the plant. If your site is poorly drained, you can plant these choices very high on mounds/berms to give roots the best chance to succeed.
In winter it is also important to check drainage. a high water table is also deadly to plants of many types. They grow fine in spring summer and fall, but the next year after winter, the plant is dead for no apparent reason. Check drainage and a high water table as a possible cause. In winter, do the same thing, dig a hole and then see if water percolates into it by the next day. If you can see water puddling in the hole, there is a high water table, and you will either have to make appropriate plant choices which will tolerate this condition or else plant very high.
flowering gingers
With the hear of summer upon us, we can enjoy our gardens and the garden fragrances. Here at this time are the flowering gingers. They have just begun to bloom this year(it has been a cooler year so they are later). You will find among these exotic looking plants, a tropical appearance, lush foliages, succulent leaves, and topping those stems are conelike clusters of flowers in white, pinks, yellows, oranges, and reds. These are very easy care plants. Just plant them and water them. If you fertilize them, they grow faster, lusher, producing more flowers and making the clump larger. Exotic fragrances come with several species and cvs. Think of those tropical fragrances of leis. Individual blooms are smaller, some have broad petals, others narrow and spidery, but all are showy atop those lush stems, looking like candles on a supersized birthday cake.(mature clump) Even though they are tropical, semitropical in origin, many are root hardy, grow them like cannas, gladiolous, etc. The tops die down with cold, but roots remain alive and push new shoots in spring, growing taller to bloom in summer, fall, winter, depending on type.
These make exquisite floral material for the vase. You cannot buy these from the florist generally. Partial shade to full sun(more watering) will give good results and the plants increase in size, faster if they are fertilized. But will grow and increase each year if soil is reasonably fertile and watering ample.
Most types are under the following genus. Alpinia (the shell gingers, some are edible), Hedychium, (the most common and the hybridizing efforts are mostly directed under this genus with amazing results now!, Zingiber, which includes the edible root ginger Z. officinalis and others like Z. myoga which is grown for its blanched stems, leaves for flavoring. Size and height of plants will vary according to the selection you have. They range from dwarfs of 1-2 ft to giants up to 12-15 ft
The variegated leaf forms are very showy without any flowers present. Striped in white or yellow, they stand out in any garden situation. If you want a little something different and permanent for that lush effect in the garden, try these flowering gingers.
how to have flowers for the coming winter and spring
Now(summer) is the time to start thinking about planting for a winter and spring display. You can take advantage of bulb mail order promotions and have the best selection at this time. If you plant things that bloom in winter now, they will be established for the coming winter season and begin to bloom in your garden during the cold part of the year.
There are a vast array of bulb choices from which to plant. Short bulbs that come first, short perennials too, and then the larger bulbs. Ordering now will give you a jump on the coming planting season. You can buy mail order for a wider selection or preorder from your favorite nurseries when their bulbs come in later. Gift certificates always work well for an immediate and unexpected present as well as a well thought out one! By choosing a color scheme, you can have a fantastic bulb display for the coming spring.
Planting winter blooming plants now is a great opportunity for enjoying the garden during the cold dark months ahead. If you choose from among the flowering shrubs and trees, you can have the cut branches in bloom for many years to come as they mature in the garden. You will cheer yourself up when things are dreary and if you share, you can cheer up friens too with a bouquet of blooms from your winter garden.
Daffodila/narcissus, cyclamen, muscari, tulips, hyacinths, crocus, galanthus(snowdrops), freesias(choose the species which are much more fragrant than the gross hybrids), ranunculus and anemones are all to be had and can be planted later when they arrive when the weather is colder.
Winter blooming shrubs and trees can be planted now, where they will continue to grow until fall dormancy. They can bloom soon after in winter if they are mature enough. Here think flowering quince (whites, blacks, pinks, yellow, orange, reds, variegated, singles and doubles, anc contorted stem forms.)
Wintersweet (Chimonanthus praecox) is a sheer joy for any garden, large or small. A big bush, you can keep it to size by cutting blooming branches in winter.
Winter honeysuckle bush comes in three forms. Lonicera fragrantissima, L. standishii, L. pupursii(a hybrid of the two species parents) all bear creamy white honeysuckle like blooms along the branches for a long time (begin in fall, continue until spring). Shrubs are stiff and arching, not impressive during summer, but oh what a joy for the winter! Easy care, LOTS of blooms, FRAGRANT and cutable for the vase.
Edgeworthia papyrifera is a daphne relative and bears nodding clusters of tube shaped flowers in creamy ivory tipped in yellow-orange
Also think of fruits(berries) and bark colors(stripebark maples, paperbark maples, etc.)(flaking and peeling barks) for brightening things up in winter.
Conifers shine during the winter season. Their needlelike or scale like foliages come in a broad array of greens, then you can move into the blues, grays, yellows and variegated tones. Choices are almost endless in their variety.
Evergreen foliage plants make nice foil as well and some are even more showy with variegated or colored leaves.
heucheras, heucharellas
Heucheras and their hybrids heucharellas are some of the most versatile of plants for the garden and containers. They have a year round quality and are showy mainly due to their colorful evergreen foliage. Some have showy flowers, but they are show stoppers because of the recent hybridizing efforts. You can make an eye catching display in the garden, light up a border/edging or have spectacular container plantings! Foliage colors are so vivid, they are almost good enough to eat, (but don’t eat them, they are poisonous/nonedible). These are easy care plants. Just plant them (at the same depth as they are purchased) and water them in, you can lightly feed them after a few months for better growth, blooms. Deepest purples, some flecked, color neutral pastels and chartreuse, and bright yellows, oranges, mango, peaches, and metallic sheens are to be found in the foliages here. There are vivid variegated varieties too! And some have showy blooms in reds, pinks, white. (they have come a long way since your grandmother used the old fashioned coral bells as edgings to the rose beds.) These plants will grow in sun to a good amount of shade. (more sun, more water). The creative gardener can make floral pictures/mosaics using short colorful plants like these!
planting tips and planting times
Some of the most often asked questions are about planting. “How to plant a ….” and “when do I do that?”
Here are some basic tips. If planting from ontainers, all plants can be planted pretty much at ANY TIME. They are going to grow either in the container or in the ground so why not plant them in the garden immediately? It is often mentioned the best time to plant is in spring or fall. This is true, but planting from containers anytime is fine, gardless of those two seasons. (it can even be done in winter, provided that the ground is workable and not saturated and muddy or too wet.
Things to observe when unpotting a plant.
Here the technique is to gently tap the top edge of the container on a hard surface to loosen the rootball from the container edges. The quick sharp tap will do this when you hold the plant upside down and tap it downward. Now look at the condition of the roots in the soil. Ideally there should just be some few roots starting to turn and the root ball is filled with young healthy (whitish and plump) roots. More often than not you will see circling roots. What to do? Well you MUST cut those circling roots. (They will NEVER untangle themselves if you do not either untangle them or cut right through them to break that circling pattern. Don’t be afraid of this. Any cuts into roots that you make will heal and produce many fresh new roots will grow outward from the rootball into the surrounding soil. If you are afraid to do this, just use an old knife or stick and cut through those circling roots about 1/2″ deep into the root ball. Remember to also look at the bottom of the rootball and cut across these roots too. Making an “X” across the bottom also about 1/2″ deep will enable the roots to heal and then to grow fresh new roots.
The reasons for doing this is that a plant cannot untangle itself once the roots begin to circle around. They will mature and increase in diameter and when the canopy/top of the plant becomes large, it will often just fall over since the roots are circled and cannot support the additional weight. (that is what happens to sapling trees when you see a younger tree just fall over after a few years). It’s roots were circling the root ball and were never cut, so when the top grew more and heavier, it just blew over in the wind, or fell down from lack of support during the soggy rains.
These basic techniques will work on most plants. There are a few exceptions and they will be discussed when the plants are highlighted in future subject topics.
If the roots are not densely matted and very crowded and circling, you may just be able to tease them open a bit and loosen the rootball and then plant.
Planting most things slightly high is beneficial. Soil will settle and go down with waterings, so higher planting will eventually get the plant at grade with the surrounding soil levels. For some plants that need very good drainage, you should plant very high on a wide mound/hill to allow for wet season higher moisture levels and also for poorly draining sites. Cherries, rhododendrons, azaleas are notable for needing much air in the root zone and if the roots are water logged, they can drown and die. Good drainage is very important to most plants.
the later dogwoods
Flowering dogwoods are among the finest ornamentals for the landscape. These are also trees which increase in beauty as they mature and provide a very dependable seasonal show of their blooms. Here are some of the recommeded later season bloomers. The dogwood family is a large one, and here we discuss the species Cornus kousa and its hybrids (C. x rutgersensis). All dogwoods like well drained soil. Remember, they come from a woodland environment with lots of humus in the soil and regular watering. A spectacular horizontal branching pattern is attractive at any time of the year, but especially so when the flat planes of branches are just covered in blooms! Again in fall, with the coloring of the leaves and those hanging fruits, the branching again plays a showy role in the garden.
These are smaller sized trees to perhaps 20 ft by 20 ft wide. Do allow for plenty of side spacing since a large part of their charm lies in seeing the horizontal branching. Thin delicate twigs with grayish bark are arranged in tiers and when covered in rain/dew drops or with frost/snow on them, they glisten like thousands of mini Christmas lights all over the tree. Individual flowers are tiny in a ball like cluster, the showy part of the bloom are the four bracts which are often star like since they are pointed. White is the basic color and there are also pinks available. Numerous varieites exist, and all are fine. Many are similar, but they have that quality of superior plant material inherent in them, so any variety you choose will be good. There are weeping and variegated forms as well. White and yellow variegations are to be found and several weeping selections can be quite showy when covered in those stars of blooms.
A soil rich in organic matter and with regular watering and good drainage are all that is needed. Dogwoods like sun to set flower buds but will tolerate a good amount of shade.
The Rutger hybrids are crosses of Cornus kousa and two natives, C. florida (the eastern dogwood) and C. nutallii (the western dogwood) The first available selections were from the C. florida crosses and very vigorous in growth and profuse in bloom. ‘Aurora’, ‘Constellation’, ‘Celestial’, Ruth Ellen, Stellar Pink are some of that hybridizing effort and available to the landscaper, gardener.
Newer are Starlite, and Venus, crosses with the western dogwood. Starlite is great for smaller sized areas since it is a narrow grower, and very upright in habit, still with horizontal side branching. Flowers to 5-6″ across. Venus is just lavishly gorgeous. Very large flowers to 8″ just cover the horizontal tiered branches in profusion. It is very vigorous too, perhaps to 30 ft.
C. kousa cvs. (there are many)
Big Apple had very large fruits
Blue Shadow has superior foliage in a very dark blue green and nice flowering
Gallilean is larger flowered and also very fine foliage
Gold Star has golden variegated centrally marked foliage and white flowers
Elizabeth Lustgarten is a weeper, perhaps a little more upright than some other weeping forms.
Kristin Lipka’s Weeping Variegated is a variegated foliage weeping selection, quite showy even after bloom.
the standard ‘chinensis’ and ‘Milky Way’ are older standbys and quite often mixed but generally all forms are nicely flowered.
Moonbeam has larger flowers to perhaps 8″
National is vigorous and more open growing
Radiant Rose is a newer pinker selection with a nice growth habit
Satomi is a pink selection
Weaver’s Weeping is a nice pendulous form, and can repeat blooming.
Wolf Eyes is a showy white variegated form which tolerates full sun with ample watering.
There are many other selections available
Another later blooming species is C. capitata and the closely related C. omeiensis.
The species are generally good and the forms ‘Mountain Moon’ and ‘Summer Passion’ are quite good.
C. cap. Mountain Moon is lush and showy with yellowish large 5-6″ bracts and lush green foliage
Summer Passion has smaller finer textured glossy leaves, bronze purple in winter, coppery in new growth in spring, summer. Flowers are pristine white and star like, and the growth habit is unique as well. Upright narrow branching, main side branches arch slightly and the branchlets are pendulous and hang down in sheets. When in bloom, this one is spectacular since the blossoms face you.
All dogwoods like regular water, and good drainage. Sun is better to promote heavy flowering. Fertile soil is appreciated, and if you soil is poor, then supplement with fertilizer and a mulch.
Checking to see how well rain has watered your plants
With the coming of the fall rainy season and a few rain showers already, you should check those areas which are not usually wetted by the rain. Those areas under eaves, and under tree canopies may not get very wet at this time and will need to be watered to keep plants in those areas from drying out unnecessarily.
Courtesy of Bob Tanem
Fall Planting Time
the fall season is a wonderful time to plant almost anything. By taking advantage of planting this season, you gain a growing season for the coming spring. Roots will grow now and continue to do so during winter, and when spring arrives, you will have an established root system capable of supporting a grand flush of growth which will give you a bigger plant sooner than one planted in spring.
Fall is also a premier time to plant Calif. natives, and other Mediterranean climate plants. They will be coming into an active period of growth with the fall, winter rains and become established more easily at this time than at any other time of year. (although container planting will allow you to plant at any time for the most part.)
Plant tender species in spring when there will be no frost, but for the majority of other plants, fall is the best time to plant.
As well, you can begin to plant your bulbs for a brilliant spring display. If you have not yet done so, refrigerate them now for a few weeks so they will grow vigorously when planted. The weather will be cooler now and bulb planting can be done anytime, if you have already refrigerated those bulbs that like a cold dormant period. (tulips, hyacinths, etc.)
winter cold period
At this time of year the garden is entering a quiet time of rest and dormancy. The colder temperatures of winter give a needed rest to those plant species from temperate regions. This is an important period for many plants as it provides a rest which will issue in a grand flush of growth in the coming growing season. If plants do not get this cold period rest, they will grow, but not as vigorously as they would had they been given the proper cold rest period. Flowering and fruit species display this most evidently. Their spring bloom is profuse if their cold requirements were met, and the show of blooms is meager if it has not.
For tender and semi hardy species, this is cold is not welcome and they will need frost protection to survive. Do not prune off frost burned parts of plants now, those damaged areas will provide insulation against future cold spells and if pruned off now, they can actually initiate a growth flush, which is not what you want at this time.
Provided you have planted cold hardy species in your landscape, they will need minimal attention now. Adding a mulch can give roots more frost protection but be sure to check it when growth starts in late winter or early spring. Clear it away so new growth can grow without restriction of the added mulch at the base of the plant. Many perennials benefit from a cold dormancy period. Herbaceous peonies are a prime example. The dormant buds need that cold period in order to bloom. Other perennials like this cold and they will show it in spring with a grand flush of top growth. You can actually divide many perennials now and they will do much root growth to support the spring flush of top growth.
With exotics like bamboo, now is a prime time to divide them as they are in a state of dormancy or semidormancy. Be sure to keep the plants from dessicating and keep them in a wind and sun protected area until small feeder roots can grow in about a month or two.
With early flowerers like flowering quince, forsythia, chimonanthus, and winter honeysuckle bush and flowering plums, this cold rest period now will yield a very fine show of blooms later on. In warm winters,, their display of blooms is meager compared to what it will be this coming season since we are having a typical winter’s cold.
It is very important to make sure all plants are kept well watered during the winter. This is especially important for camellias, rhododendrons, azaleas, and pieris. If you let them go dry now, the flower buds will abort. Deciduous species are less exacting but keep an eye on them as well to make sure they have enough water to keep the stems plump.
Winter pruning can be done now on some types of plants. Removal of dead growth and poorly placed branches can be done at any time, but is easier to see now when leaves have fallen. I tend to like to prune toward the end of winter so cuts will be exposed less to the cold and growth will begin soon after when spring arrives.
An important thing to remember is that for plants that bloom on old wood formed last year, winter is not a good time to prune them as you will be removing the flower display of spring. Prune those plants during or just after they bloom so new growth will come after the bloom period and have time to ripen over summer and fall and give branches of bloom next spring. (Deutzia, forsythia, chaenomeles, philadelphus, weigela are examples of these.)
Winter is an excellent time for garden clean up. Clearing away any debris is always a good idea as santitation will eliminate hiding places for bugs and diseases to a very great extent and lessen the need for possible spraying later on.
A dormant oil spray will eliminate many insect pests before growth starts. I like to time spraying after rainy periods and towards the end of winter. With peach leaf curl, you can miss many early season sprayings but not the last one as that is the most important before growth initiates. If you do not spray for leaf curl, you will likely have it on new growth and into summer, and the tree will be compromised. They do not usually die from this, but are set back since infected leaves fall and spores are again released to afflict growth next year
conifers benefit from a cleaning out of dead thatch type growth in the interior of the plant. now is a good time to attend to that job and rains/wind will help with this as well.
You can prune many of these now, keeping in mind the basic overall form of the plant and the interior branch structure. They bleed sap less at this time and you can use the cut branches for indoor arrangements.