Frequently Asked Questions

Question:
How do I care for Gerber daisy purchased as a flowering potted plant at the florist?
Answer:

Gerber daisy is frequently sold in florist shops and garden centers during the spring and fall.  Plants prefer cooler temperatures.  Place in bright, indirect or direct light indoors.  Soil should be moist but well-drained. ...

Question:
How do I care for Kalanchoe?
Answer:

Kalanchoe grows well in bright indoor locations.  Keep at moderate temperatures (45-65 °F at night and 50-70 °F during the day).  Keeping plants on the cool side will help prolong flower life.  Allow the soil to dry between...

Question:
I received a potted, flowering mum as a gift. How do I care for it?
Answer:

In the home, place the mum in a brightly lit, cool location.  An ideal site is one near a window that receives bright light (but no direct sunlight) and temperatures of 60 to 70°F. 

...

Question:
How are blue orchids made?
Answer:

Occasionally a florist or garden center will have vibrant blue moth orchids (Phalaenopsis) for sale.  Blue is not a color that naturally occurs in orchids.  These orchids are typically white flowers dyed to achieve this unique...

Question:
Should I prune my rose back in the fall?
Answer:

No.  Pruning stimulates new growth.  That new growth will not have an opportunity to properly harden off before winter leaving it vulnerable to more winter damage.

Even established growth that has properly hardened off will see...

Question:
Will indoor grown herbs taste the same as those grown outdoors?
Answer:

Many indoor grown herbs are not as strong or as intensely flavored compared to those grown outside. However, basil will always taste like basil whether it is grown indoors or outdoors.

Question:
How do I harvest and use herbs grown indoors?
Answer:

Harvest herbs indoors as you would if grown outdoors. Most do well with periodic snipping as they are needed in the kitchen. Leafy annual herbs, like basil, chervil, and parsley, can be cut back severely when harvested. Using a sharp knife or...

Question:
How can I provide more light for my herbs indoors?
Answer:

Providing enough light for herbs to grow well indoors, especially during the winter months when days are shorter, is difficult. Some herbs will tolerate as little as six hours of direct light a day but most want eight or more hours each day. When...

Question:
What growing conditions are best for indoor herbs?
Answer:

Light is typically the most limiting factor to successfully growing herbs indoors. Plants will need as much direct sunlight as you can provide. Most herbs need around eight hours of direct light each day when grown indoors. A south-facing sunny...

Question:
Which herbs are best for growing indoors?
Answer:

Just about any herb has the potential to be grown indoors. There are, however, a few species that do better with indoor growing conditions. These herbs tolerate the lower light levels, low humidity, and cooler temperatures indoors, making them...

Question:
How do I germinate hickory nuts?
Answer:

Hickory nuts need to be exposed to cold temperatures and moist conditions before they will germinate. (The cold-moist requirement is referred to as stratification.) The cold-moist requirement can be met by planting the nuts in the ground in fall...

Question:
How do I care for a waxed amaryllis bulb?
Answer:

Amaryllis bulbs coated in colorful and decorative wax are available in many catalogs, stores, and garden centers.  Waxed amaryllis bulbs are easy to care for and grow as they require no water or soil.  Simply place the bulb in bright,...

Question:
Are leaves a good winter mulch?
Answer:

Winter mulches are applied to plants, such as strawberries and chrysanthemums, in fall to prevent damage caused by extreme cold or repeated freezing and thawing of the soil during the winter months. Leaves are a poor winter mulch for strawberries...

Question:
What is the nutrient content of composted leaves?
Answer:

The nutrient content of composted leaves is very small. The levels of nutrients vary somewhat from species to species. However, the nitrogen content of composted leaves on a dry basis usually varies from 0.5 to 1.0 percent. Potash amounts are in...

Question:
Can oak leaves be used as a garden mulch?
Answer:

Yes. While oak leaves are slightly acidic, an oak leaf mulch should have little effect on the soil pH. Shredded leaves are an excellent mulch for vegetable gardens, raspberry plantings, perennial flower beds and around trees and shrubs. Oak...

Question:
Can I empty my pool water on the lawn without killing the grass?
Answer:

In most cases, very little to no damage will occur to the lawn when a pool, hot tub, or other chlorinated water source is emptied on it, provided it is not done frequently, dumped all in one spot, and care is taken to reduce the chlorine...

Question:
How do I over-winter the common fig?
Answer:

Common or edible figs (Ficus carica) are not reliably cold hardy in Iowa. The stems of ‘Chicago Hardy’ (considered one of the hardiest edible fig cultivars) are hardy to 10 degrees Fahrenheit and the plant’s roots are hardy to 15 to 20...

Question:
Can I grow herbs indoors over the winter?
Answer:

Many herbs can be successfully grown indoors during the winter months. The best herbs to grow indoors include basil, cilantro, parsley, chervil, rosemary, bay laurel, mint, chives, oregano, thyme, sage, and lemongrass.

Light is often the...

Question:
What is this sticky substance all over the table, floor, and lower leaves of my houseplant?
Answer:

Honeydew is a sticky, sugar-rich substance produced by insects that suck sap from plant leaves and stems.  This excretion often coats lower leaves, tables, and floors and when severe, may promote the growth of black sooty mold. 

...
Question:
Why is my houseplant wilting?
Answer:

Wilting is the result of roots not being able to provide adequate moisture to the leaves and stems.  It can be caused by two completely opposite reasons, either under-watering or over-watering, which can make it difficult to diagnose and...

Question:
What causes leaves on my houseplant to turn yellow or brown and drop off?
Answer:

Yellowing, browning, and dropping of leaves is one of the most vague and difficult issues to deal with because it can be caused by a wide variety of issues. Many of the problems seen in houseplants are not caused by just one factor, they are the...

Question:
Why does my houseplant have brown leaf tips and edges?
Answer:

Brown leaf tips or edges can happen on any indoor plant but are common on some species like spider plant and dracaena.  Trimming the brown portions off the leaves with a scissors can improve appearance, but new browning will occur if...

Question:
Are philodendrons poisonous?
Answer:

Yes.  Philodendrons and closely related species contain calcium oxalate crystals which are toxic to humans, dogs, cats, and other animals.  When any part of the plant is eaten, it may cause pain and swelling in the lips, mouth, tongue,...

Question:
How do I propagate philodendron?
Answer:

Trailing types of philodendron propagate easily from stem cuttings.  Stem sections 3 to 6 inches long with the lower leaves removed will readily root in water or rooting media, like perlite or well-drained potting soil.  If rooting in...

Question:
What do I do with the aerial roots of a philodendron?
Answer:

Most philodendron species will produce aerial roots which allows them to successfully grow on or up other trees in their native habitats.  In the home, these roots can help trailing types climb a trellis or moss pole or help the plant...

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