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We were well known for providing great plant care tips & advice! Here is a portion of our expert advice from over 30 years of taking care of plants: |
To better understand how to grow indoor plants, you must understand how plants grow!
The secret to healthy plants is a light, soilless potting mix to encourage actively growing roots! Indoor plants are tropical plants and require a different soil than in the ground here in WNY. Commercial "potting soil" is ordinarily unsuitable for indoor plants. It is not reliably sterile (causing diseases and even sometimes weeds) and is too dense. The dense nature of most commercial potting soils keep roots too wet for long periods and do not encourage good root growth. Studies have shown much more rigorous root growth in a light, soilless medium. This extra-porous formula has excellent moisture-holding capacity to provide the perfect environment for vigorous rooting. It is ideal for all kinds of potted plants – perfect for spouting seeds and for rooting cuttings. In it plants grow sturdy and strong. You can even grow containers of annual flowers outdoors in this soil (although with this light mix you may need to add gravel or rocks in the pot to prevent the wind from blowing the pot over!) You can make “Cornell Mix” at home with easily available materials: 2/3 peat moss and 1/3 perlite. If the potting medium is difficult to wet at first, fill a plastic grocery bag and add one cup of hot water and seal for 24 hours. Light Requirements
FULL SUN - Unobstructed south, southeast, or southwest window that receives direct sunlight for at least half the day. No curtains or shades. Plant should be directly in window (if plant is greater than 2 feet back, this is not Full Sun even if sunbeams are striking the plant) (1200-5000 footcandles). Plants that like this:
PARTIAL SUN - Unobstructed east or west window that receives sunlight for 2-4 hours. Plant should be only 2 feet directly back from window (600-2000 footcandles).
VERY BRIGHT LIGHT – Directly in an unobstructed north window, full sun window with sheers, 2-4 feet back from S, E, W window, or fluorescent gardening light (300-800 fc).
MEDIUM LIGHT - North window with sheers, or to side of sunny window, or 3-6 feet back of sunny window (150-500 footcandles).
LOW LIGHT - Directly below interior office fixture, or more than 6 feet back from window, or more than 2 feet to side of window. Plant species must be carefully chosen for this light level (75-150 footcandles).
****Below 75 footcandles, even low-light plants have trouble thriving.
Proper Watering
1. Plants that need to stay moist should be watered as soon as the surface of the soil
2. Plants that need to dry moderately should be watered when the soil is dry about
3. Plants that need to dry completely should be watered when the soil is dry 3/4 FertilizingPlant growth is dependant upon a steady supply of nutrients! The nutrients in any soil are soon depleted. Plants need soluble fertilizers at one-half the recommended dose, fertilize every 3rd to 4th watering during the summer months. During Fall and Winter, fertilize every 2-3 months. Time-release fertilizer may be mixed into the potting medium when repotting. Never water a very dry plant with fertilizer!
RepottingA common mistake of most beginners is to repot plants long before it is necessary. Roots growing out of the bottom of the pot do not necessarily mean that the plant needs repotting. If the plant is lifting out of the pot, or if inspection of the root system show that there is no room for root growth, then the plant should be repotted. Spring is the best time to repot indoor plants. Repotting then will ensure more new growth and less frequent watering during the hot, sunny summer. To see if a plant needs repotting: Carefully knock them out of them out of their containers. If they retain a pot shape and no soil falls away, pot in a container 1-3 inches bigger (diameter). Be sure to use a light, soilless mix for repotting. Commercial "potting soil" is ordinarily unsuitable for indoor plants. It is not reliably sterile and is too dense. A potting medium for indoor plants should be moisture retentive, well drained, and sterile. A mixture of two-thirds sphagnum peat moss and one-third perlite is an ideal medium for growing indoor plants. Carefully knock the plant out of its old pot (do not pull on the plant). Remove any loose soil especially if it is a heavy mix. If you are repotting into a undrained container, put a layer of perlite (1-2 inches in small containers and more in larger) at the bottom as a drainage layer (to prevent roots from sitting in water). Place enough soil in the bottom of the pot to have the top of the root ball near the top of the container (~1 inch below in small containers ~3” below in large). Set the plant in the pot and gently pack soil arrond the root ball with your fingers. Thoroughly water the plant until all of the soil is moist and water drains out the bottom. (In an undrained container fill with water, wait a few minutes and them carefully tip on its side to completely drain the excess water out.) Insects
Cleaning
Large-leaved plants can be easily cleaned by wiping the leaves with a damp cloth. Support the underside of the leaf with one hand while gently wiping the upper side with the cloth. To remove dust from hairy-leaved plants such as African violets and gloxinia, rub gently with a dry cotton swab or a pipe cleaner. A watercolor brush works well for this job, too. Shaping plants – Pinching & PruningA little judicious trimming will keep your plants the size you want. Without pruning and pinching, a plant can become a tall and leggy eyesore. For slow growing plants the best time to shape in spring (May or June when it just starts to grow) or just after flowering.
Pruning. Often a major branch must be removed, either to keep the plant the size you want or to improve its shape. Study the plant carefully before cutting off all or part of a major branch. Use clippers to get a smooth cut, and make the cut just above a growth bud. The best times to prune a plant are when it is in active growth (usually in the spring) or soon after it has bloomed. Some plants such as true Palms have only one growth point and trimming the top will kill the plant.
Containers
Plants grown in clay will need watering much more frequently. In winter you must be careful for clay pots conduct the cold and can chill the roots. Clay pots will also need regular cleaning to keep free of algae and salt residue. Much more maintenance will be necessary in clay pots. Plastic pots and ceramic pots will hold more moisture freeing you from watering. They are especially good for plants that like to stay moist – eg ferns, ivies, and babies tears. They also do not need such frequent cleaning as clay. Ceramic pots often are not glazed on the bottom and can leave moisture-marks on furniture and carpets. The only problem with an undrained pot is that excess water is not removed automatically. Even with good drainage material like perlite at the bottom, excess water should be removed after watering by holding the plant at an angle with a hand over the soil so none falls out. Remember, any pot can grow a gorgeous plant, the secret is the soil – and your care holds the key to success!
Moving PlantsCold weather (<50°F)Tropical plants brighten the indoors and add to our homes. However, one should be aware that these plants do not like the cold and will suffer damage from even brief exposure to air near freezing. When transporting them in winter (or any day when the temperature is below 50°!), it is important that plants be carefully wrapped. Wrap small plants in newspaper (roll pot to make a tube and fold over the excess paper at the top). Place larger plants (or several newspapered small plants) in a large plastic garbage bag. Blow into the bag to create a bubble of warm air and seal the bag tightly. Warm your car up and move your plants directly from the heated house to the heated car. Drive straight to your plant’s new home. Plants cannot be left in an unheated vehicle. Remember that plants left in plastic bags in the sun may overheat! At your new location, make sure to place plants in enough light and adjust your watering as needed. Warm weatherThe key when moving plants in warm weather is to protect them from direct sun or excess heat. Plants left in the sun (even for a few minutes) will sunburn from the sun’s ultra-violet rays that window glass screens out. If necessary, plants can be left outside for a while in deep shade under a large tree. Just as your car heats up on sunny summer days, enclosed trucks can also get very hot inside. Plants will be damaged in heat above 100° (easily reached in closed vehicles in the sun even in spring ) and any part of the plant that is touching glass or metal will be burned at much lower temperatures. Remember that plants left in plastic bags in the sun may overheat! To prevent soil messes: wrap small plants in newspaper (roll pot to make a tube and fold over the excess paper at the top). Your best bet is to load your plants last into an enclosed vehicle (indoor plants will not survive highway speeds in an open truck!), drive directly to your destination, and unload the plants first and take directly inside. At your new location, make sure to place plants in enough light and adjust your watering as needed. Vacation Tips
Seasonal TipsMay
SummerJune is an important month for all your indoor plants. Before you get busy with outdoor work, try to be sure to do the following so your indoor plants can have the benefits of highly active summer growth. Fertilizing – Plants really need a steady supply of nutrients through the active growing season. Your plants depend on you for these nutrients. Use any good fertilizer one/half the recommended strength every two weeks. Be careful to never fertilize plants that are dry – better to water thoroughly, wait 24-48 hours, then apply fertilizer. With regular feeding your plants will grow 100% better! Watering – With summer’s warm temperatures, good air movement (open windows and doors) and increased sunlight, plants will use water at a much faster rate. Plants outdoors or in open windows should be checked very often (even daily) for watering. Be sure to really soak your plants thoroughly, be sure to repot is necessary and use plastic pots (instead of clay pots) for plants that like to stay moist. Repotting – now’s the time to check all your plants for repotting. Carefully knock them out of them out of their containers. If they retain a pot shape and no soil falls away, pot in a container 1-3 inches bigger (diameter). Be sure to use a light, soilless mix for repotting, changing soil if it is not. Repotting now will ensure more new growth and less frequent watering.
Consider summering your houseplants outside! This is a nice addition to porches and other garden areas and can help some plants increase in size. A few words of warning: Some houseplants are more cold-sensitive that others (as often noticed by Buffaloians in cold winters). These plants may die or exhibit leaf damage should the nighttime temperatures drop below 50°F. Until temperatures are reliably above 50°F (after June 1 in Buffalo) the following should not be left outdoors overnight: Dracena, Schefflera, many types of Aralia, and Gesneriads. Plants outdoors are exposed to the sun’s ultra-violet rays. Window glass screens out these rays. Since our indoor plants are not accustomed to UV rays, they will sunburn if put directly out into the sun. Acclimate your plants to UV rays by placing them in heavy shade for one to two weeks before moving into the direct sunlight. Some particular types of plants prefer to be left in the shade outdoors: they tend to shed sun-grown leaves when brought back inside in the fall. Included in this category are Ficus species (eg Weeping Fig, Rubber Tree) and Schefflera. Increased sunlight and air movement results in faster rates of water use. Check plants outside at least once every day. Plants which have very thin leaves, such as ferns, will usually do better if left indoors or in shade outdoors. SeptemberIt’s time to think about bringing in the plants you have summered outdoors. The more temperature-sensitive plants should be brought in to stay. This would include Gesneriads, Dracaena, Schefflera, Ficus, and Aralia species. Others can be kept outdoors during the day and brought in when temperatures are expected to drop below 45-50 degrees. There is an appreciable difference between the quantity and quality of light your plants have been receiving all summer outdoors, and that which they will receive indoors in the fall and winter. Just as we recommended acclimating your plants to outdoor direct sun over a two-week period in the spring, it is important to re-acclimate them to indoor conditions in the fall. Gradually toning down the amount of light a plant is exposed to will result in minimal loss of foliage during adjustment. Put plants in heavy shade outdoors for one week, then in your sunniest window indoors for at least two weeks, and gradually move them into their permanent locations. Just before they are ready to make the move from outdoors to indoors, give each plant a thorough inspection and a clean bill of health. Check the foliage carefully for pests. Pay special attention to the undersides of the leaves, new growth, and junctions of leaf and stem (these areas can harbor mites, aphids, and mealy bugs, respectively). Even is you seen no sign of insects, the next step should be a thorough washing with soapy water (mild dishwashing liquid is fine), followed by a rinsing with clear water from the garden hose. If there is a definite insect problem and insecticide may be used after washing. This is also a good time to rid the soil of excess mineral salts which have accumulated from fertilizing. To do this, run clear water through the pot, using approximately ten times as much water as it normally requires to wet the soil ball. This will dissolve any mineral salts in the soil and flush them away. After you have brought your plants indoors do not expect them to carry on as it nothing has happened. You should be prepared for some loss of foliage has happened. You should be prepared for some loss of foliage during the first few weeks. Your plants’ metabolism will probably slow down or even come to a complete stand-still(!); they may use up water slowly or not at all. Let each plant take its time to adjust, and do not water it unless sufficient dryness of the soil indicates that it is necessary. After the plant adjusts, the lower light intensity, reduced air movement, and cooler temperatures will continue to influence its metabolism, and in general you should not expect it to require watering as often as before. Just remember to give your plants sufficient light, individual attention with regard to watering (no once-per-week watering schedule, please!), and occasional washing to discourage insects and dust, and you’ll be rewarded with healthy greenery to enjoy the year-round! Fall
How do our indoor plants react to these changes? The metabolism, or growth processes of plants is regulated by the environment. In the summer the warmth, long daylight hours, high light intensity, and plenty of air circulation influence the metabolism in a positive way. The faster metabolism is evident to us in an abundance of rapid growth and corresponding frequent demand for watering and fertilizing. Autumn brings cooler temperatures, shorter days, lower light intensity, and limited circulation of air, resulting in a slower plant metabolism. Since house plants are not growing a rapidly as before, they will use their water at a markedly slower rate. Many plants will stay wet for weeks. (The drying effect of forced-air heat in some homes may cause the soil to dry quickly, however.) This is the time when careless watering habits should be corrected; overwatering can not be tolerated. There are a number of pre-cautionary steps we can take to keep our houseplants healthy.
Winter
Botanical BiographiesHedera Helix – English IviesMany of our customers have stated that they “have no luck” with ivies. There can be many reasons for a plant failure – incorrect lighting, incorrect watering, poor soil or uncontrolled insects. Unfortunately, the “luck of the Irish” won’t make a difference if a plant’s environment isn’t right.
Because of their fine root system and dense thin leaves they cannot store much water and will not tolerate being allowed to dry out. With a porous potting mix, allowing just the surface to dry is sufficient. All ivies respond to “haircuts” and easily root from cuttings. Any insect attack can be easily controlled by washing the plant regularly – (once to twice a month) and careful inspection of the plant. The Indispensable Aroid FamilyThis family has given us more good “long life and low light” plants than any other plant family. One of the most interesting features of this group are the flowers. They are unusual in appearance having a center the spadix surrounded by a leaf-like bract or funnel shaped spathe. Many varieties will produce a berry or pods which will turn bright red (ex: Chinese Evergreen). Family members include: Aglaonema “Chinese Evergreen”, Philodendron, Pothos “Devils Ivy”, Nephthytis “arrowhead vine”, Spathiphyllum “Peace Lily”, and Dieffenbachia “Dumbcane”. For a plant requiring little care, most times little light, and offering beauty and variety one would be wise to choose an Ariod Family member. Spathiphyllum – The Peace Lily
Areca Palms (Chrysalidocarpus Lutescens)A member of the Palm family, the Areca is a durable indoor plant, originally from Madagascar. It enjoys warmth but will live in temperatures down to 50° F. The Areca Palm has creamy stems with dark brown flecking and very graceful fronds. It enjoys sunlight but will also grow in a north window which has bright light thoughout the day. With proper care and maintenance the Areca Palm will add elegance to your home year-round. Cacti Misunderstood BeautiesWith over 2000 recorded species, the cactus family is native to the Americas from Canada to Chili. They have adapted themselves to semi-arid or near-desert regios and provide us with excellent plants for our dry homes. One characteristic distinct to all cacti and no other plant is the spine cushion or areole. Most species have spines from areoles although some varieties are spineless. The areoles are like internodes (where a leaf joins the stem on other plants) and are growing points for branches, flowers or spines. The spines, always thought to be an armor against predators, now are known to be a shading and water-collecting device for the plant. Cactus can offer some of the most beautiful flowers found in nature. Flowers appear late spring or summer only after a cool (45-65°) dry (water when dry 3/4 of the way down the pot) winter peiod. Cacti will be best in a soilless mix and prefer full or partial sun windows. They will offer great variety in shape, size, flowers and are one of the easiest plants to grow! Ficus – the Fig Tree for Indoors
Ficus come in all shapes and sizes, best known probably the Rubber Plant (Ficus Decora) and the weeping Fig (Ficus Benjamina). Some oddities among the Ficus are Fiddleleaf Fig (Ficus Lyrata), the Varigated Rubber Tree (Ficus Doescheri) and Creeping fig (Ficus Pumila), a small leaf vine not resembling any other Ficus variety. Try one or try them all, the many Ficus varieties will truly give you a taste of the tropics for your home. |