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Adventist Youth Honors Answer Book/Nature/House Plants

Home Crops
Common Convention
Ability Degree 2 Answer-Keys 06.jpg
Yr of Introduction: 1976

1. Title not less than 5 home crops raised for his or her foliage.[edit]

2. Title three home crops raised for his or her flowers.[edit]

3. Title three home crops tailored to direct daylight, dry soils, and really moist soils.[edit]

Home crops tailored to direct daylight[edit]

Home crops tailored to dry soils[edit]

Home crops tailored to very moist soils[edit]

4. Most home crops like a 65-to 75-degree (18 C – 22 C) temperature. Title one which requires a cool room (45 to 55 levels F.) (7 C – 13 C).[edit]

The cyclamen generally offered by florists is C. persicum, which is frost-tender. Chosen cyclamen cultivars can have white, shiny pink, pink or purple flowers. Whereas flowering, florists’ cyclamens needs to be stored under 68 °F (20 °C), with the evening time temperatures ideally between 44 °F to 59 °F (6.67 °C to 15 °C). Temperatures above 68 °F (20 °C) might induce the plant to go dormant.

5. Put together a particular potting combine soil together with not less than Three totally different components. Choose two home crops from requirement two and develop them on this soil for 3 weeks.[edit]

There are potting soil recipes everywhere in the internet, together with these:

A search engine resembling Google or Yahoo will certainly flip up extra.

Soil Elements[edit]

Totally different potting soil components impart totally different properties to the soil. We listing a number of components right here together with their traits:

Clay is soil that sticks collectively right into a ball when compressed. It’s impermeable to water, so it inhibits drainage. It is rather frequent in backyard soil and is usually averted as a potting soil ingredient.
Silt is soil or rock derived granular materials of a selected grain measurement. Silt might happen as a soil or alternatively as suspended sediment in a water column of any floor water physique. It might additionally exist as deposition soil on the backside of a water physique.
Sand is made up of mineral grains bigger than people who make up silt. Water will move by means of sand, so it’s helpful in creating well-drained soils.
Perlite is an amorphous volcanic glass that has a comparatively excessive water content material. It makes composts extra open to air, whereas nonetheless having good water-retention properties. It might probably subsequently maintain water within the soil till it’s wanted by a plant.
Vermiculite is a pure mineral that expands with the appliance of warmth. It is rather just like perlite and has most of the identical properties.
Peat is tender and simply compressed. Underneath strain, water within the peat is compelled out. Additionally it is dug into soil to extend the soil’s capability to retain moisture and add vitamins.
Humus refers to any natural matter which has reached some extent of stability, the place it’ll break down no additional and would possibly, if circumstances don’t change, stay primarily as it’s for hundreds of years, if not millennia. It’s usually the idea for potting soils.
Often known as brown manure, compost is the aerobically decomposed remnants of natural matter. Compost serves as a rising medium,or a porous, absorbent materials that holds moisture and soluble minerals, offering the help and vitamins during which most crops will flourish. To maximise plant progress, it’s generally essential to dilute compost with soil or peat to cut back salinity or so as to add neutralisers to convey the pH nearer to 7, or further vitamins like fertilisers or manure, wetting brokers, and supplies to enhance drainage and aeration, resembling sand, grit, bark chips, vermiculite, perlite, or clay granules.
Manure is natural matter used as fertilizer. Manures contribute to the fertility of the soil by including natural matter and vitamins, resembling nitrogen that’s trapped by micro organism within the soil. Manure is usually acidic, reducing the soil’s pH. It’s usually mixed with lime to convey the pH again to a impartial stage.
Pea gravel/crushed stone
These are sometimes layered on the backside of a pot to advertise drainage. Crushed stone will even increase the pH of the soil making is much less acidic.
Inorganic fertilizers are described by three numbers (resembling 10-20-20) which specify the quantity of Nitrogen (N), Phosphorus (P) and Potassium (Okay) they comprise. These are important plant vitamins.
Lime is used for elevating the pH of soil. Mixed with manure, the horticulturalist can set the soil’s pH stage to a plant’s optimum stage.
Bone meal is a mix of crushed and coarsely floor bones that’s used as an natural fertilizer. As a slow-release fertilizer, bone meal is primarily used as a supply of phosphorus.
Blood meal
Blood meal is dried, powdered animal blood used as a high-nitrogen fertilizer. It is likely one of the highest non-synthetic sources of nitrogen and if over-applied it may possibly burn crops with extreme ammonia. Blood meal is totally soluble and could be blended with water for use as a liquid fertilizer.
Pine bark
Shredded bark will make soil maintain extra water.

Plant Wants[edit]

Plant pH vary Soil vary Water vary Notes
Narcissus 4.5-8.5 Sandy Loam to Clay Loam Effectively-drained Don’t embody natural amendments.
Aspidistra 5.5-7.5 Principally Sand to Principally Clay Regular to moist
Philodendron 5.5-6.5 Sandy Loam to Clay Loam Regular to moist
Aluminum plant 5.5-6.5 Loam Regular to moist
Daffodil 4.5-8.5 Sandy Loam to Clay Loam Effectively-drained Daffodils are the identical factor as Narcissus.
Sanseveria 5-7 Sandy loam to Clay loam Regular to moist Snake plant
Boston fern 5-6.5 Some sand to Loam Regular to moist
Piggy-back plant 4.5-7.5 Sandy loam to some clay Regular to moist
Chicken’s nest fern 5.5-6.5 Loam to Clay Moist
Caladium 4.5-6.5 Sandy loam to Clay loam Regular to moist
Gloxinia 7-8.5 Sandy loam to loam Moist Excessive pH (use lime and keep away from manure)
Spider plant 7-8.5 Loam to potting soil Dry to regular Excessive pH (use lime and keep away from manure)
Geranium 5-8 Principally sand to principally clay Dry to moist
Maidenhair fern 7-8 Principally sand to loam Moist to moist Choose humus-rich, moist, well-drained websites.
Begonia 6-7 Some sand to clay loam Regular to moist
Ficus 5.5-7.5 Bark to potting soil Regular to moist
Tulip 5.5-8 Principally sand to some clay Regular
Iris 5-7.5 Some sand to some clay Regular to moist
Crocus 5.5-8.5 Principally sand to clay loam Regular
Coleus 5.5-6.5 Sandy loam to clay loam Regular
Hyacinth 6-8 Principally sand to principally clay Dry to moist

6.How a lot mild does an African violet want? The place in the home is one of the best place to develop them? Develop two or extra African violets.[edit]

African Violets do greatest when the obtainable mild is about 1000 foot candles, although until you have got entry ot a light-weight meter, this data shouldn’t be terribly helpful. As a substitute, it is best to discover ways to inform if the plant is getting an excessive amount of or too little mild by observing its leaves. In the event that they obtain an excessive amount of mild, the leaves will flip pale or yellowish inexperienced. If they aren’t receiving sufficient, the leaves will flip a deep, darkish shade of inexperienced. African Violets want pretty shiny mild, however shouldn’t be positioned in direct daylight. Slightly, they want diffuse, oblique mild. When you place your hand between the plant and its mild supply, your hand ought to solid a shadow, but it surely mustn’t really feel too sizzling. This mild stage can sometimes be attained by inserting the plant about one meter from a southeast- or west-facing window.

Moreover, they won’t bloom until they’ve not less than eight hours darkness day by day, so in case you are rising them underneath lights, be sure that the lights are on a timer.

7. All gesneriads want roughly the identical rising circumstances. The place do they arrive from initially? What sort of temperature, mild, and humidity do they want?[edit]

Saintpaulia, generally generally known as African violet, is a genus of 6 species of herbaceous perennial flowering crops within the household Gesneriaceae, native to Tanzania and adjoining southeastern Kenya in jap tropical Africa, with a focus of species within the Nguru mountains of Tanzania.

African violets desire a relentless temperature between 20-25 °C (68-77 °F) with excessive humidity, and thrive greatest planted in well-drained humus or coir compost. We generally consider the tropics as very HOT and HUMID locations, however underneath the tall timber of a real tropical setting, the temperature is moderately average and comfy, although the quantity of moisture within the air is greater than in lots of locations within the western U.S.

In sensible houseplanting phrases, because of this African violets and different gesnariads (jes nair’ e advert OR guess nair’ e advert) are snug in the identical temperatures and moisture ranges that human beings are UNLESS the African violet is positioned close to an air-con vent, the place the chilly dry air will trigger it to perish.

8. Title two home crops that may be propagated from leaves, stem sections or divi­sions. Choose one plant from requirement two above, experiment with every of those strategies of propagation and hold them rising for 3 months.[edit]


Leaf cuttings
Any plant with leaves resembling African Violet, Geranium and so forth. could be propagated with leaf cuttings. Utilizing a pointy knife, minimize off a wholesome leaf on the level the place it joins the stem. Insert the minimize half, referred to as a petiole, into the rooting hormone. Place the top right into a small container of sunshine potting soil during which you make a small gap with a pencil. Making a gap previous to planting assures that the rooting hormone is not going to be dismissed the slicing whenever you plant it. Perlite, Vermiculite, and/or water-soaked Sphagnum moss could be added to potting soil to make the soil mild. Be sure the leaf is leaning barely in order that the brand new crops could have loads of mild and never be shaded by the leaf.
Stem cuttings
These are handled similar to leaf cuttings besides you chop off a stem with a number of leaves as an alternative of only one leaf. Take away the underside leaves, leaving just a few on the high. Proceed as with the leaf slicing.

In each cases, cowl the pot with a plastic bag or inverted glass jar. This can hold moisture from evaporating and hold the slicing from wilting. Hold in a heat location with subtle mild however out of direct daylight. When there may be indications of progress after about Three to six weeks, transplant the brand new rising plant into a brand new pot of potting soil. Proceed to maintain a damp setting for about 2 extra weeks till lively progress begins.


Layering is a way of plant propagation during which a portion of an aerial stem develop roots whereas nonetheless connected to the guardian plant after which detaches as an unbiased plant.

Pure layering sometimes happens when a department touches the bottom, whereupon it produces adventitious roots. At a later stage the reference to the guardian plant is severed and a brand new plant is produced consequently.

The horticultural layering course of sometimes includes wounding the goal area to reveal the internal stem and optionally making use of rooting compounds. In floor layering, the stem is bent down and the goal area buried within the soil. That is carried out in plant nurseries in imitation of pure layering by many crops resembling brambles which bow over and contact the tip on the bottom, at which level it grows roots and, when separated, can proceed as a separate plant. In both case, the rooting course of might take from a number of weeks to a yr.

Layering is extra sophisticated than taking cuttings, however has the benefit that the propagated portion can proceed to obtain water and vitamins from the guardian plant whereas it’s forming roots. That is necessary for crops that kind roots slowly, or for propagating giant items.


Offsets are layers of crops within the plant nursery enterprise. They’re clones of the mom crops (“hens and chicks”), that means that they’ve the identical genetic code.

Offsets kind when meristem areas of crops, resembling axillary buds or homologous buildings enlarge, and differentiate into a brand new plant with self-sustaining buildings. Tulips and lilies are examples which show offset traits.

When propagating crops to extend a inventory of a cultivar, thus looking for an identical copies of guardian plant, varied cloning methods (asexual replica) are used. Offsets is a pure means by which crops could also be cloned.

In distinction, when propagating crops to create new cultivars, sexual replica by means of pollination is used to create seeds. The recombination of genes offers rise to offspring plant with comparable however distinct offspring genome.


Division is a technique of asexual plant propagation, the place the plant (often an herbaceous perennial) is damaged up into two or extra components. Each the basis and crown of every half is stored intact. The method is of historic origin, and has lengthy been used to propagate bulbs resembling garlic and saffron.

To divide a plant, wait till late summer time when the plant has give up producing flowers and has died again. Dig up the bulbs and break them aside as you’d a clove of garlic (which is a bulb). Replant the bulbs wherever you need them (some maybe within the very spot the place you dug them up, others elsewhere).

The Crops[edit]

a. Narcissus
The Narcissus is most simply propagated by dividing the bulbs in late summer time.
b. Aspidistra
Divide the rhizomes (underground stems).
c. Philodendron
Propagate with stem cuttings, air layering, or by offsets.
d. Aluminum plant
Propagate by cuttings or divisions.
e. Daffodil
See Narcissus (Daffodils belong to the Narcissus genus)
f. Sanseveria
Use leaf cuttings
g. Boston fern
Propagate by division in early spring.
h. Piggy-back plant
Propagate by divisions, layering, leaf cuttings
i. Chicken’s nest fern
Divide the basis ball.
j. Caladium
Divide the roots within the fall, clear them, and retailer them over the winter in a dry, darkish place not less than 40 °F (4 °C) or hotter. Replant within the spring.
okay. Gloxinia
Greatest when propagated from seed, however you can even attempt tuber, stem, and leaf cuttings.
l. Spider plant
Propagate by layering or by dividing the mom plant.
m. Geranium
Use stem cuttings in late summer time or early fall earlier than the primary frost.
n. Maidenhair fern
Divide mom plant within the spring.
o. Begonia
Take stem cuttings and place them in a small jar of water till roots kind and develop to a half inch (12 mm) lengthy. Then transplant to potting soil.
p. Ficus
Take away a stem with not less than 5 nodes. Bury three of them in a nicely drained potting combine and water it nicely.
q. Tulip
Tulips could be propagated by means of offsets.
r. Iris
Divide the rhizomes within the fall.
s. Crocus
Divide the corm (bulb-like stem) within the fall.
t. Coleus
Take stem cuttings at any time of the yr.
u. Hyacinth
Divide bulbs into bulblets within the fall.

9. What’s a Bonsai?[edit]

Bonsai is the artwork of aesthetic miniaturization of timber by rising them in containers. Cultivation contains methods for shaping, watering, and repotting in varied types of containers. The phrase bonsai has been used within the West as an umbrella time period for all miniature timber.

10. What’s humidity? How is it necessary to accommodate crops?[edit]

Humidity is the quantity of water vapor within the air. The time period “humidity” is often taken in every day language to seek advice from relative humidity. Relative humidity is outlined as the quantity of water vapor in a pattern of air in comparison with the utmost quantity of water vapor the air can maintain at any particular temperature in a type of zero to 100%.

Humidity, together with temperature, moisture, mild, soil combination, fertilizers, potting, and pest management, is likely one of the crucial elements that needs to be thought of when caring for a houseplant.

Humidity is barely tougher to regulate than temperature. The extra generally used houseplants have established that they’ll survive in low humidity environments so long as their roots are stored correctly irrigated. Most crops thrive in 80% relative humidity whereas most properties are often stored round 20% to 60% relative humidity. Moreover shopping for a humidifier, there are some things that may be carried out to extend humidity round houseplants. The preferred strategies used to lift the ambient humidity are misting and pebble trays, that are shallow trays coated with pebbles and crammed with water that evaporates to extend humidity. Different strategies of elevating humidity embody grouping crops carefully collectively and never inserting crops in drafty areas. Misting is considerably controversial amongst gardeners, with some that swear by it and others that say it does little to extend humidity round crops.

11. Beneath is a listing of crops to select from for necessities 5 and eight above[edit]

a. Narcissus

b. Aspidistra
c. Philodendron
d. Aluminum plant
e. Daffodil
f. Sanseveria
g. Boston fern

h. Piggy-back plant
i. Chicken’s nest fern
j. Caladium
okay. Gloxinia
l. Spider plant
m. Geranium
n. Maidenhair fern

o. Begonia
p. Ficus
q. Tulip
r. Iris
s. Crocus
t. Coleus
u. Hyacinth


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