How to grow Protea? These care measures you need to master
Measure one - soil selection
The planting soil for Protea needs to be loose, well-draining sandy soil, which is beneficial to the growth of Protea.
Measure two - light
Protea likes an environment with plenty of light, so make sure Protea gets sufficient light; it is generally placed on balconies and in ventilated, sunny spots.
Measure three - watering
Protea likes a dry environment and dislikes waterlogging, so watering should be moderate and not excessive, so as not to cause root rot in Protea.
Measure four - fertilizing
Protea does not have high fertilizer requirements, so there is no need to fertilize Protea frequently; applying fertilizer once during the growing season is enough.
Alright, that is all about the language of flowers of Protea. I hope the cultivation methods and propagation methods of Protea that the editor has added can help you. Thank you for reading!
Common diseases of Protea and their control methods
Common disease of Protea: root rot
Symptoms of root rot in Protea
Root rot is a disease with strong destructive power against Protea. It is caused by root rot fungi. Warm, humid climatic conditions, especially in summer, favor the occurrence of this disease. It may cause plants of any age to die suddenly, or to turn yellow and grow slowly. When the soil is moist, the plant may wilt.
Control methods for root rot in Protea
Root rot fungi are generally caused by root rot fungi brought in from the soil. Therefore, when cultivating, the soil must first be disinfected, starting from the source.
Once a plant shows infection, continuous sterilization treatment must be carried out according to the symptoms, or contact a local plant protection expert for care.
Common disease of Protea: leaf spot
Symptoms of leaf spot in Protea
When Protea suffers from leaf spot, there are oval and elongated light reddish-brown lesions on the leaves, surrounded by chlorotic halos, which later expand into irregular large patches, and black spots form on the lesions.
Control methods
Remove diseased leaves promptly and spray chemicals promptly. A 500-fold dilution of 50% thiophanate-methyl wettable powder can be sprayed.
Leaf spot in Protea is very easy to control; after pruning off the diseased leaves, spraying chemicals can prevent and control it. But it must be handled promptly; you cannot wait until the lesions have covered 50% of the leaves before belatedly taking measures, when it is already too late for regret.
Both root rot and leaf spot in Protea easily appear in summer, so summer care measures must be in place. Strengthen ventilation, keep the growing environment cool and comfortable, inspect the plants more often, and carry out necessary sterilization and disinfection treatment.
January courtyard flower care guide
January is the month with the lowest temperatures and the coldest weather of the year, with average monthly temperatures between -4.5°C (Beijing) and 4.2°C (Shanghai). Potted ornamental plants that can be displayed in courtyards in the north must be particularly cold-hardy species. Among woody ornamental plants are: lacebark pine, dragon spruce, Japanese fir, Armand pine, Japanese white pine, black pine, Japanese black pine, heavenly bamboo, Chinese holly, boxwood, large-leaf boxwood, Chinese yew, Torreya grandis, Buddhist pine, Chinese juniper, creeping juniper, Chinese juniper 'Procumbens', Oriental arborvitae, Chinese juniper, dragon juniper, Sabina chinensis, firethorn, wintersweet (currently blooming), ginkgo, plum blossom, Butia capitata, European fan palm, windmill palm, Chilean wine palm, Washington palm, etc.; in southern regions, the following can be displayed: banyan, sago palm, Canary Island date palm, Butia capitata, silver date palm, broadleaf lady palm, silver wattle, silk oak, leatherleaf mahonia, Japanese fatsia, gold-dusted Japanese aucuba, silver-toothed palm, etc. In less cold regions such as Jiangnan, some herbaceous flowers can also be displayed, such as cast-iron plant, agave, Japanese sacred bamboo, kale, daisy, pansy, pot marigold, etc. Whether woody ornamental plants or herbaceous ornamental plants, when displayed outdoors, it should be ensured that the potting soil does not freeze, and freeze protection and insulation work should be done well.
Propagation of courtyard flowers
1. Sowing. If the courtyard has a double-layer plastic greenhouse with good moisture retention, seeds of plants such as asparagus fern, clivia, wax begonia, cyclamen, winter cherry, gloxinia, African daisy, pansy, pot marigold, nasturtium, snapdragon, pocketbook plant, and California poppy can be sown in pots inside it, but it is required to ensure that the temperature inside the greenhouse can meet the minimum temperature requirements for seed germination and seedling growth of different flower species. This month, as long as the local soil is not frozen, woody ornamental plant species that can be sown in the open ground in the courtyard include: tree peony, red camellia, horse chestnut, soapberry, camphor tree, glossy privet, Chinese privet, Elaeocarpus, wisteria, windmill palm, Chinese parasol tree, bald cypress, firethorn, photinia, Photinia davidsoniae, osmanthus, banana shrub, rose (Elizabeth), Ardisia crenata, Chinese holly, Chinese tallow tree, goldenrain tree, etc. Note that before sowing, to prevent underground pests from damaging the seeds, a small amount of tea seed cake, tobacco powder, or the pesticide carbofuran can be spread in.
2. Cuttings. This month, in simple plastic greenhouses or double-layer plastic greenhouses with good moisture retention, ornamental plant species that can be propagated by cuttings include: jasmine, chloranthus, geranium, fuchsia, Belgian azalea, bougainvillea, umbrella plant, jade plant, jade leaf, finger citron, Echeveria, night-blooming cereus, epiphyllum, Pilea, shrimp plant, nasturtium, mother of thousands, kalanchoe, bleeding heart vine, Schefflera, rubber tree, Daphne, Excoecaria cochinchinensis, Chinese evergreen, hydrangea, Cordyline, Chinese hibiscus, wax begonia, begonia, Fagraea ceilanica (African jasmine), banyan, gold-dusted Japanese aucuba, etc. This month, in the open ground of the courtyard or covered with plastic film, ornamental plant species that can be propagated by cuttings include: plum blossom (palace pink, green calyx, and other cultivars), purple-leaf plum, rose (Elizabeth, floribunda, climbing, and other cultivars), wintersweet (with heel), spiraea, boxwood species, Cleyera, leatherleaf mahonia, pomegranate, silver willow, Buddhist pine, Japanese snowflower, edgeworthia, Hypericum, forsythia, winter jasmine, spiraea, jasmine, gardenia, crape myrtle, golden-leaf privet, red-leaf barberry, etc. The cutting medium can be ordinary sandy loam, or a mixed medium of half vermiculite and half river sand.
3. Grafting. In southern regions, if the greenhouse room temperature can be maintained above 20°C, Camellia oleifera or Camellia chekiangoleosa can be used as rootstock, and small camellias can be grafted by truncating the trunk and using single-bud scions with bark peeling for side grafting, with plastic bags added for moisture retention, giving a relatively high survival rate; using 1- to 2-year-old seedlings of green maple as rootstock, air-layered bagging can be used to graft red maple, lace-leaf maple, etc.; using 1-year-old apricot or fruit plum as rootstock, cut grafting can be used to propagate superior plum blossom cultivars; using Elizabeth or wild rose as rootstock, cut grafting can be used to propagate superior rose cultivars; in the Guangzhou area, using Citrus junos as rootstock, cut grafting between Minor Cold and Major Cold can be used to propagate four-season mandarin and kumquat, with a relatively high survival rate.
4. Layering. This month, ornamental plant species that can be propagated by ground layering include: purple magnolia, camellia, wintersweet, plum blossom, weigela, gardenia, Chaenomeles speciosa, Hall crabapple, Mulus micromalus, Chinese juniper 'Procumbens', creeping juniper, snowball viburnum, Chinese snowball, winter jasmine, forsythia, hydrangea, snowball, red-flowered spiraea, spiraea, pomegranate, edgeworthia, red maple, banana shrub, four-season osmanthus, August osmanthus, French holly, Fagraea ceilanica, etc.
5. Division. This month, herbaceous ornamental plant species that can be propagated by division include: autumn zephyr lily, dwarf lilyturf, large-leaf lilyturf, silver-striped lilyturf, Japanese sacred bamboo, hosta, Hosta ventricosa, Cymbidium ensifolium, Cymbidium goeringii, Cymbidium faberi, Rudbeckia, lily of the valley, red-flowered oxalis, purple triangular oxalis, cast-iron plant, iris, bromeliads, clivia, snake plant, money tree, Calathea, Alocasia, Dieffenbachia, Anthurium, Monstera, Alocasia, multi-head green Dieffenbachia, etc. It is worth noting that for the division of some cold-sensitive flower species, it is best to carry out the work in a plastic greenhouse with good insulation to avoid frost damage. This month, woody ornamental plant species that can be propagated by division include: heavenly bamboo, Hypericum, gold-dusted Japanese aucuba, hydrangea, weigela, red-flowered spiraea, spiraea, Fagraea ceilanica, leatherleaf mahonia, Chaenomeles speciosa, broadleaf lady palm, Caragana, forsythia, jasmine, dwarf flowering cherry, gardenia, purple magnolia, sisal, bamboo palm, Pleioblastus fortunei, French holly, redbud, kerria, jasmine, chloranthus, etc. Note that cold-sensitive species can only be divided in a greenhouse.
Management of flowers planted in courtyard ground beds
1. Transplanting. In regions where the weather is not too cold, herbaceous flower species that can be transplanted and established in the courtyard include: dianthus species, kale, pot marigold, daisy, etc.; in the colder northern regions, dianthus, primrose, pot marigold, snapdragon, pansy, etc. can first be potted and placed in a greenhouse, then moved outside or planted in the courtyard after spring returns and the weather warms. This month, because the weather is especially cold, some evergreen trees, such as camphor tree, French holly, glossy privet, Elaeocarpus, schima, southern magnolia, osmanthus, etc., can continue to be transplanted by conventional methods in areas south of the Yangtze River, while areas north of the Yangtze River must adopt measures such as severe pruning, keeping a good soil ball, sealing cut surfaces with wax, wrapping trunks with rope or bundling with plastic film for moisture retention, so as to ensure the trees survive normally. This month, most deciduous flowering shrubs and landscaping trees can be transplanted and established in the courtyard, such as rose of Sharon, pomegranate, redbud, crabapple species, ginkgo, maple species, wintersweet, plum blossom, white magnolia, purple magnolia, soapberry, goldenrain tree, silk tree, horse chestnut, purple-leaf plum, purple-leaf cherry, cherry blossom, papaya, crape myrtle, wisteria, Chinese trumpet creeper, linden, tulip tree, ornamental peach, Chinese tallow tree, red-flowered spiraea, edgeworthia, rose, pearl bush, Sophora japonica, etc. This month, in conjunction with forestry land preparation for afforestation, wild tree stumps can also be collected, such as Chinese elm, Japanese bush cherry, trident maple, wisteria, wintersweet, Elaeagnus, Chinese holly, oak, Eurya, heavenly bamboo, etc. After severe pruning, they can be planted by shallow burying and high mounding, and covered with straw curtains for cold protection. After surviving and being cared for, they can be used to make stump bonsai.
2. Pruning. For hedges, ball-shaped plants, and ground-planted flowering shrubs that have not yet been pruned by December, continue to seize the time to prune. According to the different growth characteristics and tree shape requirements of ground-planted flowering shrubs, different standards should be adopted. Generally, diseased and pest-infested branches, weak branches, and dead branches should be cut off, and water sprouts and disorderly branches should be shortened, so that the flowering plants tend to have a beautiful appearance and light can reach the inner canopy. For hedges, green walls, color blocks, etc., continue pruning according to the requirements of straight lines, flat surfaces, and distinct edges and corners; for ball-shaped and other geometrically shaped plants, pruning requires smooth curved surfaces and flat straight surfaces. The pruned branches and leaves should be gathered, burned, and then used to make farmyard manure.
3. Watering. For ornamental plants such as flowering shrubs transplanted in late autumn and early winter last year, attention should be paid to watering management, watering once every 7 to 10 days. If there is a lot of dust adhering to the leaf surfaces, the canopy can be sprayed with water at noon on a clear day. It should be noted that the leaf surfaces should preferably dry by that afternoon to prevent water droplets from lingering on the leaves; otherwise, if particularly low temperatures occur in the early morning of the next day, frost or freezing on the leaf surfaces will cause a certain degree of damage to the leaves. To prevent water evaporation near the plants, after watering, straw can also be spread within a radius of 1 to 1.5 m around the base of the plant, which can both retain moisture and help protect the root system.
4. Fertilizing. In southern regions, for ground-planted herbaceous flowers transplanted in late autumn and early winter, such as dianthus, verbena, phlox, daisy, pansy, pot marigold, etc., as long as the temperature is not too low, low-concentration dilute liquid fertilizer can continue to be applied to promote normal vegetative growth; for ground-planted flowering trees in the courtyard that have not yet completed winter fertilization, such as osmanthus, camellia, plum blossom, wintersweet, rose, crape myrtle, redbud, pomegranate, crabapple, banana shrub, white magnolia, purple magnolia, Erxiang magnolia, winter jasmine, forsythia, Hypericum, leatherleaf mahonia, heavenly bamboo, firethorn, etc., time should be seized to dig ring-shaped trenches around the outer perimeter of their root bases and bury an appropriate amount of compound fertilizer or cake fertilizer. Generally, 1 to 2 jin of compound fertilizer or 1 jin of dry cake fertilizer can be applied per plant, to meet their continuous growth needs for the year.
5. Pest and disease control. The pruned dead branches and fallen leaves of flowering trees should be gathered and burned; at the beginning of this month, for species moved from south to north, tree trunks should be wrapped with straw rope early for insulation to prevent the bark from freezing; for large flowering tree plants whose trunks have not yet been whitewashed, this should also be completed in a rush at the beginning of the month; clearing weeds and fallen leaves in the courtyard and gathering them for burning or burying can significantly reduce the occurrence of pests and diseases in the coming year; for overwintering aphids on plants, plant ash can be spread to remove them; egg masses and pupae found on trunks should also be scraped off promptly.
6. Turning the soil. At the beginning of this month, for plots in the courtyard prepared for this year's cuttings, sowing, and planting, time should be seized to dig and turn them, while applying cake fertilizer, pond mud, barnyard manure, etc. After freezing and weathering, trenches can be opened and beds made in March, which can reduce the harm of underground pests to sown seedlings; idle land under large trees should also be turned, which can reduce the occurrence of pests and diseases that year.
7. Preparing fertilizer. Dry the dead branches, fallen leaves, weeds, etc. cleared from the courtyard, then pile them in layers with garden soil and burn them; the resulting fire-burned soil can be used for covering seeds after sowing or for mixing potting soil; put rapeseed cake, soybean cake, chicken manure, pigeon manure, etc. into a tank with water, seal it for fermentation, to be used that year for watering potted flowers, bonsai, and ground-planted flowering trees; mix pig manure, chicken urine, cake fertilizer, etc. with pond mud and garden soil, seal and compost, and it can be used to prepare culture soil or as topdressing for flowering trees.
8. Seed collection. Not many seeds can be harvested this month, only ornamental plant species whose fruits can be stored on the branches for a relatively long time, such as heavenly bamboo, firethorn, holly species, Ardisia crenata, Chinese privet, glossy privet, red maple, etc. After the seeds are harvested, they should be processed promptly and stratified in sand to promote germination, in preparation for sowing between March and April. For asparagus fern, clivia, winter cherry, etc. that have matured in simple greenhouses, sow them as soon as they are collected.
9. Inspection. This month, frequently inspect seeds stored in sand, including Magnolia species, banana shrub species, Manglietia species, photinia species, holly species, etc., to see whether any seeds have moldered. If mold occurs, rinse promptly and replace with clean river sand for storage; if the seeds are found to be dry, give appropriate spraying to increase humidity; if some seeds are found to have cracked and shown white, sow them in the ground promptly and cover with plastic film to retain heat and moisture. Inspect dahlia tuberous roots, canna rhizomes, etc. stored indoors to prevent mold and rot.
Management of courtyard potted flowers
1. Watering. For some potted plants placed in the courtyard that are not afraid of cold, such as pine and cypress species, ginkgo, wintersweet, plum blossom, etc., it is appropriate to water once every half month around noon, so as to keep the potting soil moist without causing the pot soil to freeze; for potted flowering trees already moved into simple greenhouses, such as plum blossom, camellia, sasanqua, Daphne, Belgian azalea, etc., because their flower stems are in the swelling stage or early blooming stage, in addition to watering the potting soil, attention should also be paid to spraying water on branches and leaf surfaces to create a relatively humid micro-environment for them; for foliage plants placed in greenhouses, potting soil watering should also be controlled, and the leaf surfaces can be sprayed once a week around noon, with the water temperature required to be basically consistent with the greenhouse room temperature, to prevent damage to leaves and roots.
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